the three basic components of a timer relay are timing mechanism, contacts, and ?

The three basic components of a timer relay are:

1. Timing Mechanism: This component is responsible for controlling the duration for which the relay remains energized or de-energized. It manages the timing cycle according to its configuration.

2. Contacts: These are the switching elements of the timer relay. Contacts can be normally open (NO) or normally closed (NC) and they connect or disconnect circuit paths based on the relay's state (energized or de-energized).

3. Supply Voltage: This component provides the necessary power required to operate the timer relay. The supply voltage varies depending on the specific application and design of the relay, and ensuring that the correct voltage is supplied is crucial for the proper functioning of the relay.

These components work together to allow the timer relay to perform its function of controlling electrical circuits based on predetermined time intervals.