In terms of electronics, the radio transmitter consists of the radio transmitter electronics and a transponder. The transponder responsible for the immobiliser function is independent from the radio transmitter electronics and can be set specific to a customer.
The radio transmitter electronics are installed onto a doublesided printed circuit board. The printed circuit board contains the lock/unlock button and any other additional buttons (additional functions) in addition to the actual radio transmitter electronics. Spring contact elements are used to provide the electrical connection between the printed circuit board and battery. Pressing a button transmits the remote control data provided with a rolling code and state-of-the-art 128-bit encryption. If the receiver control unit of the radio remote control has positively decrypted the data, it activates the output signal of the control unit.
The radio control system can be used in every European country and also in North America (USA + Canada) without limitations. System radio approvals outside Europe can be carried out in
consultation with HELLA.
The radio remote control is equipped with a holder for a mechanical key bit. The mechanical key bit is not included in the scope of delivery for the radio transmitter electronics. The key bit
is usually mounted (by using a special mounting device) either at the customer's premises or at the manufacturer's. Two radio transmitter keys are "taught-in" and assigned to the device during production of the radio receiver. Teaching additional radio transmitter keys in the field requires at least one functioning, taught-in key. For radio remote controls with two buttons, up to 7 radio transmitter keys can be taught in. If the maximum number of radio transmitter keys has already been taught in, the last key place is overwritten when teaching in another key. If the radio remote control only has one button, no keys can be subsequently taught in.