Conveniently control an X10 receiver module with an X10 wall switch by installing the X10 PRO 1-Button Keypad Plus Transmitter Base Kit. The in-wall keypad enables manual control for any X10 receiver on the powerline. Hit one side of the keypad's rocker switch to turn the receiver on, and hit the other side to turn it off! The "behind-the-scenes" transmitter base mounts in a single-gang wall box and connects to Hot and Neutral wires. The included keypad attaches to the face of the transmitter, providing a clean, elegant appearance. CONTENTS: Wall Transmitter Base Module, 1-Button Keypad. NOTES: 1. Wallplate not included. 2. Due to X10 Product changes, these Transmitter Bases are not compatible with Transmitter Bases sold before July 2007.