Temperature measurement range: -50~99; Resolution: 0.1; Accuracy: 1C (-50~70C); Sensor error delay: 1 minute Power: 220 VAC 10%, 50/60 Hz; Power consumption: 3W; Sensor: NTC sensor (1PC); Relay contact capacity: 10A/250VAC Cooler; Heating 10 A/250 V AC; Ambient temperature: 0~60; Storage temperature: -30~75; Relative humidity: 20% ~ 85% (non-condensing). The STC-1000 can automatically switch between cooling or heating modes based on the temperature set point and hysteresis value to control the unit to maintain desired temperature range. Cost effective DIY wiring design with detailed wiring diagrams to reduce wiring hassles Equipped with temperature sensor 1m long, it has passed 3000 high and low temperature impact tests, which is stable and reliable. Temperature control range: -50~99, the highest accuracy is 1. Voltage stabilizer with flame retardant and flame retardant ABS housing reaches V0 level and passes EMC test. Support over temperature sensor error alarm, as well as temperature calibration, compressor delay protection, Celsius display and other settings. Settings are automatically saved in case of unexpected shutdown Operating voltage is 220VAC + 11%, suitable for UK and EU