1 channel 868.300 MHz hand-held transmitter The hand-held transmitter works with an alternating code procedure. The coding is therefore highly secure. The radio signal varies according to a specific rule (algorithm). The transmitter range is approx. 100 m and can even be operated from a vehicle. In poor weather conditions such as rain or snow, the transmitter range may be impaired. Steel, concrete, walls or trees can also limit the transmission range of a radio transmitter or garage door opener. Technical data: Model: FM-T1 Frequency: 868.300 MHz Channels: 1 Coding: 0 Battery: CR 2032 - 3V Housing color: black Button color: yellow Size: 83 x 41 x 13 mm Programming aid: readable Scope of delivery: 1x hand-held transmitter 1x battery 1x operating instructions 1x wall bracket