Features 1、2ch 4-20mA current acquisition sampler. 2、RTU instruction supports 03/06 function code. 3、The current measurement ranges of IN1/IN2 channel is 0-25mA. 4、By modifying the RS485 address, up to 247 modules can be connected. Specification Features: 2ch 4-20mA current acquisition sampler. RTU instruction supports 03/06 function code. The current measurement ranges of IN1/IN2 channel is 0-25mA. By modifying the RS485 address, up to 247 modules can be connected. Specifications: Material: PCB Type: with pin; no pin(optional) Working voltage: DC8-25V Current acquisition: 4-20mA Accuracy: 1% Item weight: 3g / 0.1ounce Package weight: 7g / 0.2ounce Package size: 30*15*4mm / 1.2*0.6*0.2in Packing List: 1 * Sensor Module Package List 1 * Sensor Module