Foxnovo AC 220V 16A Digital LCD 7-Day Programmable Timer Time Relay Switch Shell material: durable hard plastic. Adopts Latest technology - COMS quartz Mico-controller for timing. Advanced pre-setting one week before. DIN Rail installation. The timer switch can automatically switch on and switch off various kinds of electric equipment according to fixed time. Widely used to control the lamp, water heater, sprayer, bottler, preheater, agriculture facilities, broadcasting equipment,home appliance, etc.