The MCR-304 superheterodyne receiver is designed for easy and cost-effective upgrading, enabling hard-wired control panels to operate with wireless remote devices. Compatible with all Visonic PowerCode and CodeSecure devices, the MCR-304 receiver supports up to 10 wireless devices including hand-held and portable units, window/door transmitters and a variety of detectors and other devices. The MCR-304 is designed for wireless alarm, emergency and arm/disarm applications as well as for remote control systems and gate openers for garage and parking lots. It is easy to install and program utilizing a unique ''Easy Learn'' technique for transmitter enrolment. It provides all the features professionals require, including low battery reporting, tamper protection, RF signal jamming and transmitter inactivity output indication. When used with CodeSecure devices, the MCR-304 implements a rolling code encryption algorithm to prevent ''code grabbing'' by potential intruders trying to defeat the security system.