Provide cost-effective solutions for residential security while enjoying easy professional installations with the 5800 Series of door and window transmitters. The demonstrated outdoor range proves the series has some of the industry's best performing wireless transmitters available. The 5800 Series of door and window transmitters provide the most reliable, convenient and cost effective solutions for security protection. These devices are powerful and versatile enough to help solve even the toughest, most labor intensive installations. This two zone transmitter has built-in magnetic reed switches and a wired closed circuit contact loop. With a demonstrated outdoor range of over a mile, the 5800 Series has one of the best performance of any transmitters available today. Features a standard white plastic case. Brown cases available in packs of three (5816BR). Includes a supervised replaceable CR123 battery Four pack of spare magnets (5899) Dimensions: 3-1/16" H x 1-9/16" W x 1-3/16" D UL Listed