The SA873 module is designed to interface with SL873 lock operation for safe applications with external alarm system.

VdS approved.

Features:
• External Power Supply 12V
• Power Supply 3V for Lock via SA873
• 2x123A Lithium Backup Batteries for Lock (Optional).
• External Opto-Connector
• Remote Switch - to open the lock

Buzzer indications:
• Door open
• External Alarm Activated and Opening Time Delay

Security Features:
• External Alarm Activated Input

Once an alarm signal received by the SA873 :
a. Blocking Signal sent to lock – the lock will not
    respond to any opening attempt
b. Buzzer is activated
• Silent Alarm Activation signal Output
   Silent alarm signal will be sent once the user transmits an opening code with the last digit different by +/-1
• Sabotage Protection

If one of the following situations occur, alarm signal will be sent:
a. SA873 cover removed
b. SL873 Opto-connector blocked or removed
c. Power line disconnected
d. External alarm line disconnected
e. Safe Alarm Box line disconnected.