BEA's compact 900 MHz transmitters and receiver allow for wireless activation of any door control. FCC Part 15 certification ensures proper compliance with federal radio frequency regulations. 900 MHz wireless technology provides greater line-of-sight transmission distance than legacy wireless frequencies. It also provides better penetration of obstacles such as walls, partitions, doors, or low-e glass. The BEA 900 MHz series of wireless devices includes the Contactless Upgrade Transmitter for easy upgrade of push-button touch plates to contactless solutions, which normally require additional cables to be installed.