Features:Plug: EUGood practical and antisepticFit to seafood pool， fish tank， refrigerator room， etcPower Supply: AC 110VTemperature Control Range: -9 to +38 degreeMax Load: 2000WAccuracy: -/+1 degreeSensor Length: Approx. 280cm/ 110.24"Dimension: Approx. 12cm x 6.3cm x 3.2cm/ 4.72" x 2.48" x 0.08"Heating Mode and Cooling Mode ChangeIn the "WORKING" mode， press Button "TEMPERATURE +"， after 4 seconds， the "WORK" mode will change， heating mode to cooling mode， or cooling mode to heating modeHeating mode (red light bright):When current temperature set temperature - 1degree， switch on the powerWhen current temperature set temperature + 1degree， cut off the powerCooling mode (green light bright):When current temperature set temperature + 1degree， switch on the powerWhen current temperature set temperature - 1degree， cut off the powerProtection function: When short circuit occurs， temperature screen shows [dd]， the power automatically cut offPackage Included:1 x Digital Refrigerator Thermostat Temperature Controller