This controller is suitable for temperature control of the middle and low temperature cold storage; It could measure,display,control temperature,with the function of temp. calibration,forced defrost,over temp. alarm and sensor failure alarm,one key recovery of factory default value,parameters preset and one key recovery; It adopts touch key design with the key lock function; Two way sensor inputs:cabinet temperature sensor and defrost temperature sensor. Three way control output:Refrigeration,defrost and fan. Temperature measuring range:-40℃-99℃ Temperature controlling range:-40℃-85℃ Accuracy:±1℃ at(-30℃-50℃);±2℃ at other range Resolution:0.1℃ Power consumption:Less than 5W Output capacity:Refrigeration:10A/220VAC Defrost:10A/220VAC Fan:10A/220VAC Power supply:220VAC ±10%,50/60Hz Ambient temperature:-5℃-60℃ Probe type:(10Kohm/25℃,B value3435K) Colour:Black Material:plastic Size:Sensor length:2meters Package Contents: 5 x Thermostat 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.