Air conditioning relay & Four-pin relay  

                                    Four-pin Relay         Four-pin relay is a common device in the automatic control system. It is generally used to connect and disconnect the circuit, issue control commands and reflect the status of the equipment by dropping the card, and remove the signal by returning the signal card after the equipment restores to normal. It is an important part of the automatic control and remote control circuit.                                    Main Parameter TYPE                                SCH-T90-1A-24S                           &nbs…