Features 1、LED SCREEN: Mini thermostat with large and clear LED display for better readability, very convenient 2、SAFE ALARM: The thermostat supports switching of cooling and heating modes, and supports alarm function of temperature exceeding limit or sensor error to ensure safety 3、OPERATING PRINCIPLE: The thermostat can control the temperature by setting the temperature setting value and the difference value 4、SOLID SHELL: Temperature controller adopts ABS flame retardant plastic shell, which possess impact resistance, scratch resistance and is environmentally friendly 5、ACCURATE AND SENSITIVE: Temperature controller with NTC sensor, possess high sensitivity, fast response speed. High resolution accuracy, power consumption &lt;3W Specification Item Type: Digital Temperature Controller Measurement and Control Temperature Range: -50℃ - 99℃ Resolution: 0.1℃ Accuracy: ±1℃ (-50℃ - 70℃) Power Consumption: <3W Sensor: NTC sensor Ambient Temperature: 0℃ - 60℃ Storage Temperature: -30℃ - 75℃ Relative Humidity: 20% - 85% (no condensation) Package List 1 x Digital Temperature Controller