12v 30A remote control to control 4 relay switches

this is a 30A version 4 channel relay switch, it can switch up to 4 different devices, included 4 receivers, separately. and upon how your setup, you can control up to 4 different devices in 4 different locations, and control with just one remote control transmitter. this universal set can be used to turn On and Off any 12 Volt DC devices such as auto lighting kits, computer accessories and  other electronic applications, it is easy to wire with basic electrical wiring knowledge.

Receiver specs:
Require Power: 12Vdc
Switch relay output: 12Vdc
Relay Load: 30A
This is a DC switch, for AC outlet,  please use an AC to DC adapter!

Wiring:
Red: +12VDC In
White: +12VDC Out
Black: Ground
Blue: Antenna

Transmitter (remote control) specs:

Compact 4 buttons, A,B,C,D toggle on and off for each switch, battery is complimentary

battery type A27

transmitting range ~80ft range tested in open field with minimum interference.

(range vary depends on signal strength and interference in the operating area)