RX101-2 12v 30A dry contact 0v out relay switch with wireless on-off remote control key fobs
this gadget can be used to make open and close contact on most of your 12v project that requires switching function
this set requires 12vdc with minimum of 500mA power source, require an AC to DC adapter if use with AC outlet
remote transmitting range ~80ft
*range vary depend on interference in the area, device setups and battery strength

package includes 2 remote control transmitters and 1 main relay switch.

The switch can be set up in two ways, as shown in the diagram in the photo section:

1.     You can control your device with 12v output, which will also power your device when the switch is closed.

2.     Alternatively, you can set it up with no voltage (dry contact 0v output) at all to your output device when it closes the contact for your device.