Check the listing for details. 12V 15A Momentary contact switch with 2 wireless remote control key fobs RM11. Color: Black, Condition: New. Listed at 19.00 USD. Item number 35057598709012v momentary on switch can be used in 12v DC devices such as 12v home, automobile or boat application, works with any 12v LED lighting, hunting decoy devices, certain water heat pumps, school and hobbyist projects... Receiver:Function mode: momentaryRequires 12v DC with at least 500mA power to operate*DO NOT connect directly to any AC outlet, use an AC to DC adapter!Bandwidth: 315Mhz Relay contact max. current: 15ADraws ~4.5mA when in standby.Dimension: 1 7/8" x 2" x 1" RF Remote Control:Momentary mode: press/hold button to activate receiver, release deactivate switchOne large easy touch button with key chainUse A27 type of battery, included.Water-resistant housingTransmit range up to ~80ft range vary depends on signal strength and interference in areaDimension: 2 1/4" x 1 1/8" x 3/8" if use for water heater tank, here is a YouTube made by one of our customers: https://www.youtube.com/watch?app=desktop&v=ekFH0boYs3w