4 Channel Relay Input Acquisition Modem RS485 Module with Modbus Protocol

Parameters of ZHT4400

• Introduction​ of ZHT4400

ZHT4400 is a serial port control module that provides 4 DI, 4 DO and a RS485 interface, support the standard Modbus RTU protocol, support dry wet node detection, support relay delay shut down after opening, we provide comprehensive technical supports. It can be widely used in pump control, access control monitoring, lighting control, such as valve monitor application scenario.

• Function​ of ZHT4400

ZHT4400 supports modbus RTU, a question-and-answer communication method, which is simple, versatile and easy to use. Using rs485 communication network, the on-site switch status can be feed back to the host and the on-site switch valve can be controlled through this module