GPS Tracker TK510 User Manual page 22

TK510 GPS Vehicle Tracker
111111EXT:1:0,
 Output1
Output 1 is connected with relay to stop the car, the wiring is as following:
 Output2
Output 2 is connected with siren for alarm, the wiring is as following:
 Output3
Output 3 is for optional use, the connection is same as outpu1/output2.
 Output4 & Output5 (Impulse Output)
Output 4 & output5 are negative impulse output to lock/unlock the car door.
the impulse shape of signal & connection is as following:
Activate the impulse output4, SMS command: 111111LCK0,
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User Manual