Temperature measurement range: -20°C to +400°C Power supply voltage: DC 8–25 V (12 V recommended) Working current: 8–13 mA MODBUS RTU protocol: Function code 03 (read), function code 06 (write) Serial baud rate: 9600 (default), N, 8, 1 Up to 247 modules can be cascaded via RS-485 address configuration (use RS-485 repeater for more than 16 modules) to read temperature and PT100 resistance values Compatible sensor: PT100 (2-wire or 3-wire) Temperature measurement accuracy: ±1% Calibration recommended if temperature deviation is excessive Dimensions: 60 × 30 × 16 mm Weight: 16 g Product name: PT100 Waterproof High-Temperature Probe Probe diameter: 6.5 mm Probe length: 30 mm Probe material: Stainless steel Cable length: 0.5 m Wire configuration: 2-wire or 3-wire Housing material: Polymer Color: As shown in image Package contents: 1 × Temperature Sensor Module Note: Color may vary slightly due to lighting and screen settings. Size tolerance: ±1–3 cm.