Principle

It is based on 51 series single-chip microcomputer (AT89051) and equipped with corresponding hardware circuit to complete password setting, storage, identification and display, drive electromagnetic actuator and detect its driving current value, receive alarm signal sent by sensor, send data and other functions. The single-chip microcomputer receives the typed code and compares it with the password stored in the EEPROM. If the password is correct, the electromagnetic actuator will be driven to unlock; if the password is incorrect, the operator will be allowed to re-enter the password for up to three times; If it is not correct, the single-chip microcomputer will send an alarm to the intelligent monitor through the communication line.

Failure analysis

How to judge equipment failure?

1. Equipment Power-off

Unlock method: Unlock by emergency pull rod method

2. The lock latch is not centered and offset

Unlock method: Unlock the emergency lever and pry the door

3. Power-on time is too long Cause the electromagnet frame to burn

Unlock method: Pry emergency lever to unlock

4. No response to emergency unlocking

Unlock method: Cut off or saw off emergency lever with pliers, and toggle stopper powder metallurgy unlocking

Specification Parameters

Packing List