Ethernet 10/100Base-T Modbus TCP/IP remote digital I/O module with 12 isolated digital inputs, 2 open-collector digital outputs, and 2 counter/frequency/latch channels. Supports Modbus/TCP, TCP/IP, UDP, ICMP, ARP, dry/wet contact inputs, 4.5 kHz counter/frequency, 1 kHz pulse output, 3000 VDC isolation, built-in web server, and 10 to 30 VDC power input.