Features: Accurately measure temperature with up to 7 NTC sensors using our (1 set) 7-channel RS485 NTC measurement sensor with sensor A, compatible with B3950 10K 1% NTC thermistors. Our sensor module supports MODBUS RTU instructions with 03 and 06 function codes, allowing for easy integration into your existing system. It is powered by a 6-24V supply with a working current of 8-15MA, depending on the number of external NTCs connected. Use it to monitorthe temperature of your homebrew beer, control the temperature of your sousvide cooking, or manage the climate in your greenhouse. With the ability up to 247 modules by modifying the 485 address, it is perfect for larger setups. Compact and easy to install Get accurate temperature readings with ease Specifications: Power supply voltage: 6-24V Package Type ：7-Channel RS485 NTC Measurement Sensor A/ 7-Channel RS485 NTC Measurement Sensor B Working current: 8-15MA (related to the number of external NTCs) MODBUS RTU command supports 03 06 function code Size: approx 60x37x14MM/2.36x1.46x0.55in Package Includes: 1 Set 7-Channel RS485 NTC Measurement Sensor note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.