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EMD-8208
Ethernet 8*Relay 8*Isolated DI 2*LAN Module
202,40 EUR
including VAT 240.86 EUR
- Dual Ethernet Ports (2 × LAN):
Two 10/100 Mbps auto‑switching RJ‑45 ports enable daisy‑chain topology, simplifying network wiring and reducing switch requirements.
- 8 Isolated Digital Inputs:
Photo‑isolated channels protect against electrical noise and voltage spikes. Each input supports TTL‑level logic and can function as a software counter up to 200 Hz.
- 8 Relay Outputs:
Independent relay channels rated at 3 A @ 250 VAC or 3 A @ 30 VDC, suitable for switching AC or DC loads such as lights, solenoids, or contactors.
- Built‑in Web Server:
Provides direct browser‑based configuration and control without additional software. Supports IP reassignment and remote management.
- Protection Features:
Over‑voltage protection up to 60 V DC (max) and over‑current protection up to 50 mA (max) on digital inputs ensure long‑term reliability.
- Software Counter Function:
Any digital input can be configured as a counter input (up to 200 Hz), enabling pulse counting for sensors or event tracking.
- Flexible Software Integration:
Includes Windows and Linux DLL libraries (EMD820x.dll) for integration with C/C++, Visual Basic, or other environments supporting Windows DLLs.
- DIN‑Rail Mountable Metal Enclosure:
Compact, rugged metal housing with DIN‑rail mounting for industrial control panels.
- 24 V DC Power Supply:
Operates from a standard 24 V DC industrial power source.
- Operating Temperature Range:
0 °C to +70 °C for reliable operation in industrial environments.
Two 10/100 Mbps auto‑switching RJ‑45 ports enable daisy‑chain topology, simplifying network wiring and reducing switch requirements.
- 8 Isolated Digital Inputs:
Photo‑isolated channels protect against electrical noise and voltage spikes. Each input supports TTL‑level logic and can function as a software counter up to 200 Hz.
- 8 Relay Outputs:
Independent relay channels rated at 3 A @ 250 VAC or 3 A @ 30 VDC, suitable for switching AC or DC loads such as lights, solenoids, or contactors.
- Built‑in Web Server:
Provides direct browser‑based configuration and control without additional software. Supports IP reassignment and remote management.
- Protection Features:
Over‑voltage protection up to 60 V DC (max) and over‑current protection up to 50 mA (max) on digital inputs ensure long‑term reliability.
- Software Counter Function:
Any digital input can be configured as a counter input (up to 200 Hz), enabling pulse counting for sensors or event tracking.
- Flexible Software Integration:
Includes Windows and Linux DLL libraries (EMD820x.dll) for integration with C/C++, Visual Basic, or other environments supporting Windows DLLs.
- DIN‑Rail Mountable Metal Enclosure:
Compact, rugged metal housing with DIN‑rail mounting for industrial control panels.
- 24 V DC Power Supply:
Operates from a standard 24 V DC industrial power source.
- Operating Temperature Range:
0 °C to +70 °C for reliable operation in industrial environments.
Comprehensive Product Summary – EMD‑8208 Ethernet 8 × Relay / 8 × Isolated DI / 2 × LAN Module
### 1. Product Overview
Product Name: Ethernet 8 × Relay / 8 × Isolated DI / 2 × LAN Module
Model: EMD‑8208
Series: EMD‑820x Ethernet Digital I/O Module Series (includes EMD‑8204 / EMD‑8208 / EMD‑8216)
Article Number: EMD‑8208
Manufacturer: JS Automation Corp. (健昇科技股份有限公司)
Headquarters: 6F., No. 100, Zhongxing Rd., Xizhi Dist., New Taipei City 221, Taiwan
Website: [www.automation.com.tw](http://www.automation.com.tw) | [www.automation‑js.com](http://www.automation-js.com)
Contact: Tel +886‑2‑2647‑6936 | Fax +886‑2‑2647‑6940 | Email control.cards@automation.com.tw
The EMD‑8208 is an industrial‑grade Ethernet digital input/output module designed for remote control and monitoring applications. It integrates 8 photo‑isolated digital inputs and 8 relay outputs, dual Ethernet ports for daisy‑chain networking, and a built‑in web server for standalone operation. The module provides reliable, network‑based digital I/O control suitable for automation, building management, and remote sensing systems.
### 2. Key Features
- Dual Ethernet Ports (2 × LAN):
Two 10/100 Mbps auto‑switching RJ‑45 ports enable daisy‑chain topology, simplifying network wiring and reducing switch requirements.
- 8 Isolated Digital Inputs:
Photo‑isolated channels protect against electrical noise and voltage spikes. Each input supports TTL‑level logic and can function as a software counter up to 200 Hz.
- 8 Relay Outputs:
Independent relay channels rated at 3 A @ 250 VAC or 3 A @ 30 VDC, suitable for switching AC or DC loads such as lights, solenoids, or contactors.
- Built‑in Web Server:
Provides direct browser‑based configuration and control without additional software. Supports IP reassignment and remote management.
- Protection Features:
Over‑voltage protection up to 60 V DC (max) and over‑current protection up to 50 mA (max) on digital inputs ensure long‑term reliability.
- Software Counter Function:
Any digital input can be configured as a counter input (up to 200 Hz), enabling pulse counting for sensors or event tracking.
- Flexible Software Integration:
Includes Windows and Linux DLL libraries (EMD820x.dll) for integration with C/C++, Visual Basic, or other environments supporting Windows DLLs.
- DIN‑Rail Mountable Metal Enclosure:
Compact, rugged metal housing with DIN‑rail mounting for industrial control panels.
- 24 V DC Power Supply:
Operates from a standard 24 V DC industrial power source.
- Operating Temperature Range:
0 °C to +70 °C for reliable operation in industrial environments.
### 3. Technical Specifications
Digital Inputs (DI):
- Quantity: 8 photo‑isolated inputs
- Logic High Level: ≥ 3.15 V DC
- Logic Low Level: ≤ 1.35 V DC
- Over‑Voltage Protection: 60 V DC (max)
- Over‑Current Protection: 50 mA (max)
- Counter Input: Any DI channel
- Counter Speed: 200 Hz (max) square wave
Digital Outputs (Relay):
- Quantity: 8 relay outputs
- Relay Contact Capacity: 3 A @ 250 VAC / 3 A @ 30 V DC
- Transistor Capacity (when used in hybrid configurations): 500 mA (peak), 45 V DC (max)
- Isolation: Relay contacts isolated from logic circuits
Ethernet Interface:
- Ports: 2 × RJ‑45 connectors
- Speed: 10/100 Mbps auto‑negotiation
- Protocol: UDP/IP communication
- Default IP Address: 192.168.0.100
- Default Port: 6936
- Supports IP reassignment and port configuration
Power & Environmental:
- Supply Voltage: 24 V DC input
- Power Connector: JM4 terminal block
- Operating Temperature: 0 °C to +70 °C
- Storage Temperature: –20 °C to +80 °C
- Humidity: 5 % to 95 % RH (non‑condensing)
Physical Characteristics:
- Dimensions: 107.6 (D) × 135.8 (W) × 34 (H) mm (4.3 × 5.4 × 1.4 in)
- Weight: Approx. 0.5 kg (typical)
- Enclosure: Metal case with DIN‑rail mounting bracket
### 4. Functionality
The EMD‑8208 functions as a remote digital I/O interface over Ethernet. It allows users to monitor input states and control output relays through a network connection or via its embedded web interface.
Operating Principle:
- The module communicates via Ethernet using UDP protocol.
- Each device is assigned a unique IP address and port number.
- Commands and data are exchanged between the host controller (PC, PLC, or embedded system) and the module.
- Inputs can be read and outputs can be set individually or in groups.
- The built‑in web server enables direct browser access for configuration, monitoring, and manual control.
Use Cases & Applications:
- Remote Contact Sensing:
Detect open/close states of windows, doors, or switches; monitor alarm or fire detector signals.
- Remote Control:
Operate doors, lighting, or power circuits remotely via Ethernet.
- Industrial Automation:
Integrate with SCADA or PLC systems for distributed I/O expansion.
- Building Management Systems (BMS):
Control HVAC, lighting, and access systems over IP networks.
- Data Acquisition:
Use counter inputs for pulse counting from flow meters, encoders, or proximity sensors.
Compatibility:
- Works with Windows 2000/XP/Vista/7/10 and Linux systems.
- Supports integration with Borland C/C++, Microsoft Visual C/C++, and Visual Basic.
- DLL‑based API allows custom software development for automation control.
### 5. Components & Accessories
Included Components:
- EMD‑8208 Ethernet I/O Module
- User Manual (V1.0)
- Software Package (EMD820x driver, API, demo programs)
- DIN‑rail mounting hardware
Connectors:
- J2, J3: Ethernet RJ‑45 sockets (10/100 M auto‑switch)
- JM1: Digital Input connector (+Ve, IN0–IN7, EXTG)
- JM2: Relay Output connector (OUT0–OUT3, COM0–COM1)
- JM3: Relay Output connector (OUT4–OUT7, COM2–COM3) – EMD‑8208 only
- JM4: 24 V DC power input connector
- SW2: System reset switch
Optional Accessories:
- JD52000: 110/220 VAC to 24 V DC @ 1.5 A power supply
- JS52026: 110/220 VAC to 24 V DC @ 0.75 A power adapter
### 6. Installation & Setup
Mounting:
- Designed for DIN‑rail installation in control cabinets.
- Ensure adequate ventilation and avoid exposure to excessive vibration or moisture.
Power Requirements:
- Supply 24 V DC regulated power to JM4 connector.
- Observe polarity (+24 V and GND).
Network Configuration:
1. Connect Ethernet cables to J2 and/or J3 ports.
2. Default IP address is 192.168.0.100; default port 6936.
3. Use the provided software or web interface to assign a new IP address if required.
4. For Internet access, configure gateway and firewall to allow UDP traffic to/from the module.
Software Installation:
- Run `EMD820x_Install.exe` to install drivers, API libraries, and demo programs.
- Default installation path: `..\JS Automation\EMD820x\`
- `API` folder: Header files and VB/VC libraries
- `Driver` folder: Device driver code
- `exe` folder: Demo programs and source code
Programming Integration:
- Include `EMD820x.h` and link with `EMD820xVC.lib` (MS C/C++) or `EMD820xBC.lib` (Borland C/C++).
- For Visual Basic, add `EMD820x.bas` module to the project.
- The DLL functions allow initialization, I/O control, counter management, and security operations.
### 7. Performance & Capabilities
Speed & Response:
- Input counter frequency: up to 200 Hz (200 pulses per second).
- Ethernet communication latency depends on network load; optimized for low‑latency UDP control.
Capacity:
- 8 independent input channels and 8 relay outputs.
- Each relay can switch up to 3 A load at 250 VAC or 30 V DC.
Efficiency:
- Low power consumption due to solid‑state input isolation and efficient relay drivers.
- Dual LAN design reduces network infrastructure costs by allowing daisy‑chain connections.
Limitations:
- Counter inputs not suitable for high‑frequency signals above 200 Hz.
- Relay contacts not intended for inductive loads without proper suppression.
- Operating temperature limited to 70 °C; avoid installation in high‑heat environments.
### 8. Standards & Compliance
Electrical & Safety:
- Designed for industrial 24 V DC control systems.
- Input and output isolation protects against transient voltages and ground loops.
Environmental:
- Operating humidity 5 – 95 % RH (non‑condensing).
- Metal enclosure provides EMI shielding and mechanical protection.
Regulatory Compliance:
(Manufacturer specifications indicate compliance with typical industrial control equipment standards; specific certifications may be available upon request.)
Software Standards:
- Compatible with Windows DLL architecture and standard TCP/IP network protocols.
- Supports UDP communication for real‑time I/O control.
### 9. Additional Information
Warranty & Support:
- Standard manufacturer warranty (terms available from JS Automation).
- Technical support via email and online resources.
- Firmware updates and software downloads available to registered users through the JS Automation website.
Maintenance:
- Periodically inspect connectors and wiring for tightness and corrosion.
- Avoid exposure to moisture or conductive dust.
- Relays are mechanical components; expected lifetime depends on load type and switching frequency.
Firmware & Software Updates:
- Firmware version 1.0 and above supported.
- Updates can be applied via software utility using the Ethernet interface.
Security Features:
- Password‑protected access to prevent unauthorized configuration changes.
- Default password: “12345678”; can be changed or reset to factory default.
- Lock/unlock status readable via API functions.
Error Handling & Diagnostics:
- Comprehensive error codes for communication and operation diagnostics (e.g., socket errors, IP errors, timeout, security lock).
- LED indicators show system activity and network status.
Software Function Summary (DLL API):
- Initialization and closure functions (`EMD820x_initial`, `EMD820x_close`)
- Firmware version read (`EMD820x_firmware_version_read`)
- I/O control (`EMD820x_port_set`, `EMD820x_port_read`, `EMD820x_point_set`, `EMD820x_point_read`)
- Counter management (`EMD820x_counter_enable`, `_read`, `_clear`)
- Network configuration (`EMD820x_change_IP`, `_change_socket_port`, `_reboot`)
- Security management (`EMD820x_security_unlock`, `_password_change`, `_password_set_default`)
Ordering Information:
- EMD‑8204: 4 DI / 4 Relay Ethernet Module
- EMD‑8208: 8 DI / 8 Relay Ethernet Module (this model)
- JD52000: 110/220 VAC → 24 V DC @ 1.5 A Power Supply
- JS52026: 110/220 VAC → 24 V DC @ 0.75 A Power Adapter
### Summary
The JS Automation EMD‑8208 is a robust, network‑enabled digital I/O module engineered for industrial and building automation. Its combination of 8 isolated inputs, 8 relay outputs, and dual Ethernet ports provides flexible integration into distributed control systems. The module’s standalone web server, software counter capability, and comprehensive API support make it suitable for both simple remote control tasks and complex automation networks. With its 24 V DC operation, DIN‑rail mounting, and metal enclosure, the EMD‑8208 delivers durability, reliability, and ease of deployment in demanding environments.
### 1. Product Overview
Product Name: Ethernet 8 × Relay / 8 × Isolated DI / 2 × LAN Module
Model: EMD‑8208
Series: EMD‑820x Ethernet Digital I/O Module Series (includes EMD‑8204 / EMD‑8208 / EMD‑8216)
Article Number: EMD‑8208
Manufacturer: JS Automation Corp. (健昇科技股份有限公司)
Headquarters: 6F., No. 100, Zhongxing Rd., Xizhi Dist., New Taipei City 221, Taiwan
Website: [www.automation.com.tw](http://www.automation.com.tw) | [www.automation‑js.com](http://www.automation-js.com)
Contact: Tel +886‑2‑2647‑6936 | Fax +886‑2‑2647‑6940 | Email control.cards@automation.com.tw
The EMD‑8208 is an industrial‑grade Ethernet digital input/output module designed for remote control and monitoring applications. It integrates 8 photo‑isolated digital inputs and 8 relay outputs, dual Ethernet ports for daisy‑chain networking, and a built‑in web server for standalone operation. The module provides reliable, network‑based digital I/O control suitable for automation, building management, and remote sensing systems.
### 2. Key Features
- Dual Ethernet Ports (2 × LAN):
Two 10/100 Mbps auto‑switching RJ‑45 ports enable daisy‑chain topology, simplifying network wiring and reducing switch requirements.
- 8 Isolated Digital Inputs:
Photo‑isolated channels protect against electrical noise and voltage spikes. Each input supports TTL‑level logic and can function as a software counter up to 200 Hz.
- 8 Relay Outputs:
Independent relay channels rated at 3 A @ 250 VAC or 3 A @ 30 VDC, suitable for switching AC or DC loads such as lights, solenoids, or contactors.
- Built‑in Web Server:
Provides direct browser‑based configuration and control without additional software. Supports IP reassignment and remote management.
- Protection Features:
Over‑voltage protection up to 60 V DC (max) and over‑current protection up to 50 mA (max) on digital inputs ensure long‑term reliability.
- Software Counter Function:
Any digital input can be configured as a counter input (up to 200 Hz), enabling pulse counting for sensors or event tracking.
- Flexible Software Integration:
Includes Windows and Linux DLL libraries (EMD820x.dll) for integration with C/C++, Visual Basic, or other environments supporting Windows DLLs.
- DIN‑Rail Mountable Metal Enclosure:
Compact, rugged metal housing with DIN‑rail mounting for industrial control panels.
- 24 V DC Power Supply:
Operates from a standard 24 V DC industrial power source.
- Operating Temperature Range:
0 °C to +70 °C for reliable operation in industrial environments.
### 3. Technical Specifications
Digital Inputs (DI):
- Quantity: 8 photo‑isolated inputs
- Logic High Level: ≥ 3.15 V DC
- Logic Low Level: ≤ 1.35 V DC
- Over‑Voltage Protection: 60 V DC (max)
- Over‑Current Protection: 50 mA (max)
- Counter Input: Any DI channel
- Counter Speed: 200 Hz (max) square wave
Digital Outputs (Relay):
- Quantity: 8 relay outputs
- Relay Contact Capacity: 3 A @ 250 VAC / 3 A @ 30 V DC
- Transistor Capacity (when used in hybrid configurations): 500 mA (peak), 45 V DC (max)
- Isolation: Relay contacts isolated from logic circuits
Ethernet Interface:
- Ports: 2 × RJ‑45 connectors
- Speed: 10/100 Mbps auto‑negotiation
- Protocol: UDP/IP communication
- Default IP Address: 192.168.0.100
- Default Port: 6936
- Supports IP reassignment and port configuration
Power & Environmental:
- Supply Voltage: 24 V DC input
- Power Connector: JM4 terminal block
- Operating Temperature: 0 °C to +70 °C
- Storage Temperature: –20 °C to +80 °C
- Humidity: 5 % to 95 % RH (non‑condensing)
Physical Characteristics:
- Dimensions: 107.6 (D) × 135.8 (W) × 34 (H) mm (4.3 × 5.4 × 1.4 in)
- Weight: Approx. 0.5 kg (typical)
- Enclosure: Metal case with DIN‑rail mounting bracket
### 4. Functionality
The EMD‑8208 functions as a remote digital I/O interface over Ethernet. It allows users to monitor input states and control output relays through a network connection or via its embedded web interface.
Operating Principle:
- The module communicates via Ethernet using UDP protocol.
- Each device is assigned a unique IP address and port number.
- Commands and data are exchanged between the host controller (PC, PLC, or embedded system) and the module.
- Inputs can be read and outputs can be set individually or in groups.
- The built‑in web server enables direct browser access for configuration, monitoring, and manual control.
Use Cases & Applications:
- Remote Contact Sensing:
Detect open/close states of windows, doors, or switches; monitor alarm or fire detector signals.
- Remote Control:
Operate doors, lighting, or power circuits remotely via Ethernet.
- Industrial Automation:
Integrate with SCADA or PLC systems for distributed I/O expansion.
- Building Management Systems (BMS):
Control HVAC, lighting, and access systems over IP networks.
- Data Acquisition:
Use counter inputs for pulse counting from flow meters, encoders, or proximity sensors.
Compatibility:
- Works with Windows 2000/XP/Vista/7/10 and Linux systems.
- Supports integration with Borland C/C++, Microsoft Visual C/C++, and Visual Basic.
- DLL‑based API allows custom software development for automation control.
### 5. Components & Accessories
Included Components:
- EMD‑8208 Ethernet I/O Module
- User Manual (V1.0)
- Software Package (EMD820x driver, API, demo programs)
- DIN‑rail mounting hardware
Connectors:
- J2, J3: Ethernet RJ‑45 sockets (10/100 M auto‑switch)
- JM1: Digital Input connector (+Ve, IN0–IN7, EXTG)
- JM2: Relay Output connector (OUT0–OUT3, COM0–COM1)
- JM3: Relay Output connector (OUT4–OUT7, COM2–COM3) – EMD‑8208 only
- JM4: 24 V DC power input connector
- SW2: System reset switch
Optional Accessories:
- JD52000: 110/220 VAC to 24 V DC @ 1.5 A power supply
- JS52026: 110/220 VAC to 24 V DC @ 0.75 A power adapter
### 6. Installation & Setup
Mounting:
- Designed for DIN‑rail installation in control cabinets.
- Ensure adequate ventilation and avoid exposure to excessive vibration or moisture.
Power Requirements:
- Supply 24 V DC regulated power to JM4 connector.
- Observe polarity (+24 V and GND).
Network Configuration:
1. Connect Ethernet cables to J2 and/or J3 ports.
2. Default IP address is 192.168.0.100; default port 6936.
3. Use the provided software or web interface to assign a new IP address if required.
4. For Internet access, configure gateway and firewall to allow UDP traffic to/from the module.
Software Installation:
- Run `EMD820x_Install.exe` to install drivers, API libraries, and demo programs.
- Default installation path: `..\JS Automation\EMD820x\`
- `API` folder: Header files and VB/VC libraries
- `Driver` folder: Device driver code
- `exe` folder: Demo programs and source code
Programming Integration:
- Include `EMD820x.h` and link with `EMD820xVC.lib` (MS C/C++) or `EMD820xBC.lib` (Borland C/C++).
- For Visual Basic, add `EMD820x.bas` module to the project.
- The DLL functions allow initialization, I/O control, counter management, and security operations.
### 7. Performance & Capabilities
Speed & Response:
- Input counter frequency: up to 200 Hz (200 pulses per second).
- Ethernet communication latency depends on network load; optimized for low‑latency UDP control.
Capacity:
- 8 independent input channels and 8 relay outputs.
- Each relay can switch up to 3 A load at 250 VAC or 30 V DC.
Efficiency:
- Low power consumption due to solid‑state input isolation and efficient relay drivers.
- Dual LAN design reduces network infrastructure costs by allowing daisy‑chain connections.
Limitations:
- Counter inputs not suitable for high‑frequency signals above 200 Hz.
- Relay contacts not intended for inductive loads without proper suppression.
- Operating temperature limited to 70 °C; avoid installation in high‑heat environments.
### 8. Standards & Compliance
Electrical & Safety:
- Designed for industrial 24 V DC control systems.
- Input and output isolation protects against transient voltages and ground loops.
Environmental:
- Operating humidity 5 – 95 % RH (non‑condensing).
- Metal enclosure provides EMI shielding and mechanical protection.
Regulatory Compliance:
(Manufacturer specifications indicate compliance with typical industrial control equipment standards; specific certifications may be available upon request.)
Software Standards:
- Compatible with Windows DLL architecture and standard TCP/IP network protocols.
- Supports UDP communication for real‑time I/O control.
### 9. Additional Information
Warranty & Support:
- Standard manufacturer warranty (terms available from JS Automation).
- Technical support via email and online resources.
- Firmware updates and software downloads available to registered users through the JS Automation website.
Maintenance:
- Periodically inspect connectors and wiring for tightness and corrosion.
- Avoid exposure to moisture or conductive dust.
- Relays are mechanical components; expected lifetime depends on load type and switching frequency.
Firmware & Software Updates:
- Firmware version 1.0 and above supported.
- Updates can be applied via software utility using the Ethernet interface.
Security Features:
- Password‑protected access to prevent unauthorized configuration changes.
- Default password: “12345678”; can be changed or reset to factory default.
- Lock/unlock status readable via API functions.
Error Handling & Diagnostics:
- Comprehensive error codes for communication and operation diagnostics (e.g., socket errors, IP errors, timeout, security lock).
- LED indicators show system activity and network status.
Software Function Summary (DLL API):
- Initialization and closure functions (`EMD820x_initial`, `EMD820x_close`)
- Firmware version read (`EMD820x_firmware_version_read`)
- I/O control (`EMD820x_port_set`, `EMD820x_port_read`, `EMD820x_point_set`, `EMD820x_point_read`)
- Counter management (`EMD820x_counter_enable`, `_read`, `_clear`)
- Network configuration (`EMD820x_change_IP`, `_change_socket_port`, `_reboot`)
- Security management (`EMD820x_security_unlock`, `_password_change`, `_password_set_default`)
Ordering Information:
- EMD‑8204: 4 DI / 4 Relay Ethernet Module
- EMD‑8208: 8 DI / 8 Relay Ethernet Module (this model)
- JD52000: 110/220 VAC → 24 V DC @ 1.5 A Power Supply
- JS52026: 110/220 VAC → 24 V DC @ 0.75 A Power Adapter
### Summary
The JS Automation EMD‑8208 is a robust, network‑enabled digital I/O module engineered for industrial and building automation. Its combination of 8 isolated inputs, 8 relay outputs, and dual Ethernet ports provides flexible integration into distributed control systems. The module’s standalone web server, software counter capability, and comprehensive API support make it suitable for both simple remote control tasks and complex automation networks. With its 24 V DC operation, DIN‑rail mounting, and metal enclosure, the EMD‑8208 delivers durability, reliability, and ease of deployment in demanding environments.
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emd8204-8.pdf
PDF Catalog
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emd820xe.pdf
Manual
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sw820x.pdf
Manual
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