USA Standard Mechanical Timer,IP20 1)With switch knob 2)With grounded pin 3)15A ,125V~,60Hz,Maximum switching resistive 1875 W load (e.g. incandescent lamp/bulbs, heating cables, etc.)or 500 W inductive load (e.g. devices with coils, such as transformers, ballasts, etc.) 4)Precision:+5 minutes ,RH: 0-95%,Working Temperature:-15-80 5)Used for In-house appliance controlling,Time-controlled switching off ,for example: TV,lighting, heating system ,cooling system, as well as sprinkler systems for terrariums, humidifiers,flow pumps for aquariums,ventilators,dosing and CO2 systems,manual switchover of operation modes Aautomatic, Permanent ON.