DuoFern Standard handheld transmitter with one channel The DuoFern handheld transmitter with one channel is used to manually control DuoFern receivers. Up to 48 devices can be controlled simultaneously via the field - making the handheld transmitter a smart home remote control. The LED indicator also shows whether the command was transmitted correctly (red or green indicator). Thanks to the use of batteries, the handheld transmitter is mobile. However, it can also be mounted wherever you wish on the wall thanks to the included wall mount. Functions / compatibility: - A subsequent adjustment of the end points and a change in the direction of rotation of the radio-controlled tubular motors are possible - Stable radio connection, "DuoFern" 434.5 MHz - All DuoFern products also act as repeaters - Made in Germany Technical information: - Supply voltage: 3 V - Battery type: 1 x CR 2450 (included) - Transmission frequency: 434.5 MHz - Range: outdoors around 100 m, in the building around 30 m