Features: 1.03 06 Function: The MODBUS RTU instruction of this NTC temperature sensor supports 03 06 function code. 2.Easy Cascading: By modifying the 485 address, up to 247 modules can be cascaded for use (if more than 16, use R485 repeaters). 3.Temperature Range: With this NTC temperature sensor probe, the temperature can be measured from minus 20 Celsius to plus 125 Celsius. 4.Adaptable Sensor: B3950 10K 1% NTC thermistor, and up to 7 NTC sensors can be connected at the same time. 5.High Accuracy: This NTC temperature sensor is about 50cm / 19.7in long, and it is featured with high accuracy in measurement. specification:Item Type: RS485 Module Material: Printed Circuit Board NTC Sensor: 5x25mm Waterproof Probe Total Length: Approx. 50cm / 19.7in ( Manual Measurement, Slight Error May Exist ) Resistance Resistance Value: 10K Resistance Accuracy: 1% Resistance B Value: 39501% Temperature Measurement Range: Minus 20 to 125 Wire : 2651 26 Parallel Wire, Resistant to Temperature 105 Plug Type: XH2.54 2P Probe: Version A Does Not Have Mounting Holes Power Supply Voltage: 6 to 24V Working Current: 8 to 15MA (Related To The Number Of External NTC) PackageList:1 x RS485Module 1 xNTCTemperatureSensor