| After-sales Service: | Yes |
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| Warranty: | 1 Year |
| Certification: | CE |
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Relay is an electric control device, which is an automatic device that changes the controlled quantity in a predetermined step or changes the on-off state of the controlled circuit when the input quantity (excitation quantity) reaches a specified value.
Electrical appliance is an electrical control device, which can give a specified input and keep it for a long time, and make the controlled quantity change in a predetermined step in the electrical output circuit. When the input is reduced to a certain degree and kept for a long time, it will return to the initial state.
Relays are generally composed of electromagnets, springs, electrical contacts, etc., which are used to protect devices, automatic control systems and electrical appliances in communication equipment. They are usually used to transmit signals and control multiple circuits at the same time, and can also be directly used to control small-capacity motors or other electrical actuators.
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