Features: Operating voltage: dc 8-25v (dc 9v 12v 15v 24v) Operating current: 10-14mA MODBUS RTU Command support 03 06 function code. V1(CH1) channel voltage measurement range is 0-5V, V2(CH2) channel voltage measurement range is 0-10V, C1/C2(CH3/4) channel current measurement range is 0-20MA/4-20MA. Voltage resolution is 0.01V, measurement accuracy is 1%; current resolution is 0.1MA, measurement accuracy is 1%; if the error is greater than 1%, it can be calibrated. MODBUS commands can be made serial HyperTerminal (serial assistant) OR PLC Enter. Under the MODBUS command mode, it can support up to 247 devices in parallel. Specifications: Item size: 45 * 30 * 15mm / 1.77 * 1.18 * 0.59in Item weight: 10g / 0.35ounces Package size: 55 * 40 * 25mm / 2.16 * 1.57 * 0.98in Packaeg weight: 12g / 0.42ounces Note: 1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2.Please allow a little measuring deviation due to manual measurement. Package List: 1 * Module