Specification:A:Power Module:Working voltage: DC 8-30V Working current: 14-25MA MODBUS RTU protocol, 03 read , 06 or 16 write . Serial port baud rate: 9600 (default), N, 8, 1 By modifying the 485 address, up to 247 modules can be cascaded (more than 16 please use R485 repeater) Specification:A:Power Module:Can read temperature and PT100 resistance value Adapted sensor: PT100 2-wire sensor Temperature measurement range: A version -40℃ to +220℃; Temperature measurement accuracy: 1%. DIN rail Box parameters: Insulation grade: flame-retardant VO grade Installation: DIN35 and C45 rail Typical application: Thermostatic Controls Industrial Systems Consumer Products Thermally Sensitive Systems Measuring instruments Indoor and outdoor temperature measurement Temperature in vegetable garden Weather forecasting, and monitoring Temperature in Computer Room Warehouse temperature Colour:As Shown Material:plastic Specification:A:Power Module Package Contents: 1 Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.