Another mode of transmission is that the command is passed on regular wire car by a weak signal, similar to the interference from the spark plugs. The advantages of this method is that no wires are not connected directly to the alarm system and the output relay, hence the name of the relay – 'Wireless'. It can be hidden in a bundle of regular wires, find and neutralize it is practically impossible. But this method requires more security team itself – theoretically it can 'eavesdrop' and write any wire a car, so the commands must be encrypted variable code. The third way to – on the radio.
The security system is equipped with a transmitter, and the output relay – receiver. This method advantages of wireless relay continues, but has some limitations related to the fact that getting the team to allow the engine may be difficult because of interference. Situational relay may be possible to to determine what is blocking relay circuit, the absence of any signal or even the diagnostic reports a car. To prevent this, the digital relays are becoming more complex, and are ability to decide when they lockable chain must be restored, and when – no. For example, the relay can simulate engine failure, while taking into account what sort of circuit blocks it, and install the degree of 'seriousness' fault. This approach to the blocking of the engine is possible only if the security system of communication between its modules and actuators. Class channel management The most common and convenient control channel security system is to control the radio, using the remote control.