Specifications:Power Supply: AC 110V-240VDisplay: LED Digital TubeTemperature Measuring Range: -9C~99CControl Precision: 1CMeasuring Accuracy: 0.1CResolution: 0.1CRefresh Rate: 0.5sTemperature Calibration Range: (+/-)9CMeasurement Input: NTC(10K0.5%)Waterproof Type SensorOutput: Relay 10A One LoadStatic Current: less than 40mAAttraction Current: less than 65mAWorking Environment: -10C~60C, Humidity 20%~85%Working Modes: Heating or Cooling Mode Power Cable Length: Approx. 150cm / 59inItem Size: 140 * 98 * 44mm / 5.5 * 3.86 * 1.7inItem Weight(with Sensor and Power Plug): 320g / 11.3ozPackage Size: 20 * 13 * 5.5cm / 7.87 * 5.12 * 2.16inPackage Weight: 394g / 13.9oz Features: Show the measured temperature, start temperature and stop temperature at the same time. Digital tube LED display for clear readings, 4 buttons for easy operation. Pre-wired cord with a plug, plug and play design for convenient use. Heating/refrigeration modes, users can set the start/stop temperature freely. Temperature measuring range: -9C~99C; resolution: 0.1C. Also with temperature calibration function. Indicator light for indicating working status. Suitable for a wide range of applications, such as fish tank, floor heating, green house, etc.