Momentary 12V Direct Output Remote Controller for Horn Starting System

I would like some help to make my Horn starting system become remote controlled. At present I have a momentary switch on a 12 foot cable when the switch is press it activates the horn. I would like the horn and housing to be separated. I would like the horn to be approximately 100M away. Which of your products will help me? In the future I would like to add a 2nd and 3rd horn to my set up which will be housed in separate boxes.

If you want to remote control a horn, we recommend the long range 1 channel 12V momentary receiver (S1XM-DC12-ANT2) and the long range transmitter CB-1. It is direct power output; control lights, motors, fans, electrically operated doors/locks/windows/blinds/cars or other appliances. You can turn on/off the receiver with transmitter (remote control) from any place within a reliable distance; the wireless RF signal can pass through walls, floors and doors. Its working distance can reach 2000m with external extended antenna.

Here is the wiring diagram. Wire horn to A&B terminals and supply 12V power to the receiver. There is no need to supply additional power to horn because horn can get power from powered receiver.