1.Two modes:switch the modes between heating and refrigerating. 2.Control temperature by setting the temperature setting value and the difference value. 3.Temperature calibration,refrigerating control output delay protection; 4.Alarm when temperature exceeds temperature limit or when sensor error. 5.High accuracy of temperature measurement and clear temperature value. 1.This controller is suitable for temperature control of the middle and low temperature cold storage or heating equipment. 2.High accuracy of temperature measurement,clear temperature value and more convenient observation. 3.Can be used for domestic freezer, water tanks, refrigerator,industrial chiller, steamer, industrial equipment and other temperature control applications. specification Model:STC-100A Relay capacity:10A(0.5HP)/220VAC Temperature measure range: -40~99°C Temperature controlling range: -40~99°C Resolution: 1°C Accuracy: ±1 °C±0.5digit Ambient requirements: temperature: 0-60°C humidity: 20%-85%(No condensate) Consumption:≤3W Input: 1 NTC sensor Sensor lenth:2M(include the probe) Delay time when sensor error:1 min Safe level of the front panel:IP54 Storage temperature:-30°C - 75°C Front Panel Size:77(L)x34.5(W)mm/3x1.35in Installing hole Size:71(L)x29(W)mm Item size:77(L)x34.5(W)x62mm(D)/3x1.35x2.42in Colour: Black material: plastic Package Contents:2 x Temperature Controller 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.