DENSO Korea Corporation FN00040 User Manual

3. Outline of Smart Key FOB

Electronic Key is mainly used for locking or unlocking the doors of the vehicles. 

Electronic Key detects signals when it reaches the vicinity of vehicle, and sends signals 

using radio frequency. 

Also, Electronic Key sends a radio wave signal while a button is pushed.    When the 

button is released, the radio wave signal is automatically off within 0.392 seconds.   

When the button is depressed continuously, Electronic Key sends a signal for a 

predetermined constant time. 

This product sends a signal when the following buttons are pushed. 

Actuator 

Receiver 

Subject for application

Installation in vehicle

Micom 

Electronic Key 

314.35 MHz 

134.2 kHz 

Smart Key ECU 

Trunk button 
for opening the trunk 
or back door. 

Lock button   
for locking the doors 

Unlock button   
for unlocking the doors. 

Panic button   
for Panic Alarm