Fridge Switch 12 VOLT 25 AMPS Easy installation.How Fridge switch works: Fridge switch has an inbuilt electronic movement and vibration sensor which switches the 12 volt circuitof the caravan’s 3 way fridge ‘on’ when the vehicle is moving and turns the fridge ‘off’ when the vehicle stops.Fridge switch has a varying timing circuit which may keep the fridge turned on for up to 3 minutes after the vehicle has stopped.This is to keep the fridge turned on while you are stopped at traffic lights.FRIDGE SWITCH 40 AMP UPGRADE for fridges that draw more than 25 amps.Features and Benefits:No more flat batteries when the fridge is left onOnly one auxiliary line neededAutomatically turns your caravan fridge on and offSpecifications:Brand: RV ElectronicsDimensions: L100mm x W52mm x H30mmWhat is Included:1 x RV Electronics Fridge SwitchImportant Information:Not what you are looking for? Check out the full range of Fridge Hardware here.