The MCM-140 employs Visonic's PowerCode™ wireless technology featuring 16 million possible code combinations and smart, anti-collision transmission algorithms. For arming, disarming and security functions, the MCM-140 utilizes Visonic's CodeSecure™ wireless technology. Featuring over 100 million possible combinations and proprietary rolling code encryption algorithm, CodeSecure™ prevents "code grabbing" by potential intruders. This ergonomically designed remote commander is powered by a standard long life Lithium battery with visible and transmitted low battery alarms. A wall-mounted bracket enables mounting the unit in the most convenient place.