The Draper 121092 MC1 and MC1-WRT/R Low Voltage Control Board and RF Receiver and Transmitter Kit includes everything needed to control a projection screen with an RF Handheld Remote. The MC1 Control Board (with or without relay closure) and Wireless RF Control provides multiple input control options for screen, lift or shade motors. This simply designed, but powerful control board accepts 2-way serial communication, infrared commands via IR receiver, and relay closures found in home integration systems. The WRT/R is a package consisting of a receiver and hand-held transmitter which control an LVC-III Low-Voltage Interface (sold separately) or the MC1 (included) via radio frequency. Its range with fresh batteries is approximately 75'. The transmitter is approx. 23/8" wide, 5 3/4" long, and 1/2" thick. The Transmitter operates on two AAA batteries (included). The receiver is approx. 37/8" x 21/8" x 1", with an antenna approx. 1 3/4 " long, and a 10' long, 4-conductor modular cable, which plugs into a standard RJ-11 plug on the LVC-III or MC1. Each Receiver will learn up to five Transmitters.