A timer is an electrical device equipped with a clockwork mechanism and a relay and contact that interrupt or start the electrical circuit depending on the fulfillment of a given condition.
Contact timers are an electrical device that, unlike standard timers, has a contact socket. They are plugged into the outlet and have a socket for a plug for an electrical appliance. They come in several types:
An electromechanical timer is a device with a control disk that rotates and can be set to operate at a certain time or interval between hours. In this case, the possibility of adjustment is more limited.
A digital timer is a device with electronic components, an LED display and control buttons. Unlike the electromechanical one, the digital one has more information about the operation of the device, but also provides greater adjustment possibilities. The digital timer can be used for cyclicity and repeatability.
A timer with electricity meter is a type of digital timer that has a built-in electricity meter. In addition to the great capabilities of the digital timer for setting when and how the connected appliance should operate, it can also measure current consumption.