The police officer said to be sure to manually lock your car door by hitting the lock button inside the car. Внимание!За Ваши неправильные или ошибочные действия при установке ПДУ я ответственность не несу! Current 2-way systems include the usual acknowledgment functions (yes, door is locked), in addition to a remote-start function that allows the user to warm the car engine before leaving the house. That way if there is someone sitting in a parking lot watching for their next victim it will not be you.
European automakers are incorporating the technology in vehicles in cooperation with insurance companies, who in turn, require it as a condition for acquiring auto insurance. Transmission times must not exceed five seconds, and periodic transmissions of one second (max) at regular intervals are allowed only if the rate of such transmissions is less than one per hour. The content on this webpage is protected by copyright laws of the United States and of foreign countries.
Most of these systems employ one-way (simplex) communications. Remote keyless entry (RKE) systems have become extremely popular. Earlier SAW devices positioned their nominal frequency at the midpoint of the 1.74MHz-wide 433MHz band (433.05MHz to 434.79MHz) to ensure reliable operation over the expected process and temperature variations.