E851-RTU(4440-ETH) 12-channel network IO controller supports 4-channel digital input

[Introduction]：E851-RTU(4440-ETH) is a network IO product that supports 4-channel digital input (default dry contact), 4-channel differential analog input, and 4-channel relay output. Support Modbus TCP/RTU protocol . The product has a high degree of ease of use, and users can easily and quickly integrate into their own systems to achieve Ethernet-based remote control.