A single relay for a single circuit with normally open and normally closed outputs - can be used both to switch on and to switch off. Coil current only 38mA.
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A small double relay for switching two or three circuits, such as trailer lights. It takes less than 40 milliamps from each vehicle light circuit to switch. Power to supply the trailer lights is drawn from the vehicle battery or fusebox.
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A small 12V double relay with a built in buzzer for powering trailer or caravan indicator lights. It takes less than 40 milliamps from each vehicle light circuit to switch. Power to supply the trailer lights is drawn from the vehicle battery or fusebox.
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This relay fits in line in the vehicle's rear fog light circuit and switches off the vehicle fog light(s) when a trailer is connected.
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Fits in line in the rear parking distance sensor circuit and switches off the sensor buzzer when a trailer is connected. It is not usually suitable for vehicles with factory-fitted parking sensors (Typically, these have the buzzer under the dash)
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