Cylink 303F - Cautions; Faults & the Solutions

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Cancel: Send “nocenternum+password” to tracker, it will reply “no center num ok”.
7. Cautions
Please comply with the instructions to extend the unit life:
1. Keep the unit dry. Any liquid, i.e. rain, moisture, may destroy or damage the inside circuitry.
2. Don’t use & store the unit in dusty places.
3. Don’t put the unit in overheated or overcooled places.
4. Handle carefully. Don’t vibrate or shake it violently.
5. Clear the unit with a piece of dry cloth. Don’t clean in chemicals, detergent.
6. Don’t paint the unit, this may cause some foreign materials left in between the parts.
7. Don’t disassemble or refit the unit.
8. Please read the user manual carefully before installation and operation, learn something more about the
voltage range. Otherwise, it won’t work properly or destroy the product.
8. Faults & the Solutions
Faults
Solution
Fail to turn it on
Please check if built-in battery is charged, and power wires connected well.
No GSM signal
⚫ Please check if SIM card installed correctly.
⚫ Please check if SIM card is GSM network.
No GPS
Installed location should be unblocked to ensure to receive GPS signals.
No reply to SMS command
Password wrong or the SMS format is wrong
Call without SMS reply or
cannot receive alarm SMS
Authorized number is wrong or without setting any authorized number
Stop engine fail
Check the relay for engine cut is right connected.
Remote Controller fail
Remove external power , turn on the device and program again
Siren fail
Siren’s voltage is DC12V/24V/1A. Siren can’t be activated if it is negative
triggered.