Switch the modes between cool and heat;Control temperaturesetting 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.Sensor length:1m(include the probe)Temperature measuring range:-50~99Resolution:0.1Accuracy: 0.1(-50~70)sensor error delay:1 minutePower supply:110-220VAC10%,50/60HzPower consumption:Less than 3WSensor: sensor(1PC)Relay contact capacity:Cool(10A/250VAC);Heat(10A/250VAC)Ambient temperature:O~60Storage temperature:-30-75Relative humidity:20~85%(No condensate)Different batches may have different contents on the back sticker.Colour:As ShownMaterial:plasticPackage Contents:1X 110-220V Digital Temperature Controller1X English manualOnly 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.