A radio transmitter with two channels for controlling the receiver unit 2040416. The radio signal is transmitted in encrypted form using the AES128-bit KeeLoq® hopping code method, making the unit suitable for facilities with high security requirements. It is equipped with an LED that indicates when it is transmitting a radio signal. If the transmitter's battery level is low, the LED diode will indicate this by flashing instead of lighting up continuously when the button is pressed.
