and high qualitySwitch the modes between cool and heat; Control temperature by setting the temperature setting value and the difference value; Temperature calibration; Refrigerating control output delay protection; Alarm when temperature exceeds temperature limit or when sensor error.Technical Parameters:1.Temperature measuring range: -50 Celsius ~ 99 Celsius2.Resolution: 0.1 Celsius;3.Accuracy: +/- 1 Celsius (-50 Celsius ~ 70 Celsius);4.Sensor error delay: 1 minute5. supply: AC110-220V 50/60Hz6. consumption: less than 3W;7.Sensor: NTC sensor (1PC);8.Relay contact capacity: Two Relay Cool 10A/220VAC; Heat 10A/220VAC;9.Ambient temperature: 0 Celsius ~ 60 Celsius;10.Storage temperature: -30 Celsius ~ 75 Celsius;11.Relative humidity: 20% ~ 85% (No condensate)Colour: blackMaterial: plasticSize: 75*85*35mmPackage Contents:1 * temperature controller1 * temperature sensorSafety RegulationsDanger:1.Strictly distinguish the sensor down-lead, wire and output relay interface from one another, and prohibit wrongconnections or overloading the relay.2.Dangers: Prohibit connecting the wire terminals without electricity cut-off.Warning:Prohibit using the machine under the environment of over damp, high temp., strong electromagnetism interference orstrong corrosion.Notice:1.The supply should conform to the voltage value indicated in the instruction.2.To avoid the interference, the sensor down-lead and wire should be kept a distance.Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.