Function description: Supply voltage: 6-24V Working current: 8-15MA (related to the number of external NTCs) MODBUS RTU supports 03 06 function code By modifying the 485 address, up to 247 modules can be cascaded for use (please use R485 repeater for more than 16 modules) color: blue Material: PCB Suitable sensor: B3950 10K 1% NTC thermistor, up to 7 NTC sensors can be connected at the same time Temperature measurement range (using our NTC sensor): -20C to +125C. Temperature measurement accuracy (using our NTC sensor): 1%. Dimensions: 60 X 37 X 14MM Package Contents: 1 x NT18B07 7CH RS485 NTC Temperature sensor Board(no sensor) 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.