1. Intelligent temperature controller, refrigeration/heating -99~400 degree. 2. Smart PT100 temperature sensor, durable, Suitable for many occasions. 3. Can be used for Tin stove/High temperature flume/UV curing machine/High temperature equipment/Film sealing machine 4. Can be used for vegetable farming, warehouse, domestic freezer, Cold storage, poultry farming, water tanks, refrigerator, industrial chiller, boiler, steamer, industrial equipments and other temperature-controlled systems. Specifications: Temperature control range: -99Celsius-400Celsius Temperature measurement error: ±0.5Celsius Sensor model: PT100 Display accuracy: 1Celsius Operating Voltage: AC220V Working current: 200MA Relay contact current: 10A AC220V 2200W Data storage: Yes Operating temperature: 0Celsius-60Celsius Storage temperature: -10Celsius-60Celsius Colour: Black Material: ABS Package Contents: 4 x Temperature Controller 4 x PT100 M8 Probe Sensor Only the above package content, other products are not included. Note: Light reflection 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.