Functions: Experience precise temperature control with our 8-channel DS18B20 RS485 Modbus RTU temperature control sensor remote digital module. Our module supports MODBUS RTU commands 03 and 06, allowing you to easily adjust temperature settings. By changing the 485 address, up to 247 modules can be cascaded for use (if more than 16 modules are used, use R485-repeaters). Using DS18B20 temperature and humidity sensors, up to 8 DS18B20 temperature sensors can be connected simultaneously. Ideal for industrial systems, consumer products, and temperature-sensitive systems for both engineers and DIY enthusiasts. Specifications: Power: 6-24V Working current: 8-13mA (depending on the number of external DS18B20) MODBUS RTU command supports function code 03 06 Measurable temperature range: -55 ℃ to +125 ℃ (-67 ℉ to +257 ℉) Size: approx. 70x46x18MM/2.75x1.81x0.71in Weight: 40 g Note: Due to lighting effects and camera angles, there may be some variations in the product; please understand. Allow 0-1 cm tolerance due to manual measurement. Packaging includes: 1st RS485 DS18B20 sensor module