4 analog input ports (12-bit
ADC): voltage (0 ~ 5V), current (4~20mA), and current (0 ~ 20mA) ^^ 4 digital input ports ( 4.5V ~ 25V): wet contact, dry contact, NPN, PNP ^^ 4 digital output ports (Relay): normally open and normally closed ^^ Control/monitor via Modbus TCP protocol with multiple TCP connections (Max. 4 connections simultaneously) ^^ Device can connect to Android/iOS apps, Windows software, HMI devices, etc.