Anti Tamper Alarm
The SR2’s alarm trigger is activated by an LDR (Light Dependant Resistor) which is located to the top side of
the unit as illustrated below
The alarm function is designed as an ‘Anti-Theft’ facility. Forceful removal of the installed keypad or a sudden
change in light source will trigger the keypad to bleep constantly. The unit will also be “Blocked” from use
The function cannot be disabled but it can be stopped by presenting a valid card or key fob to the reader or
entering the Master Code followed by the # sign
Alternatively, you can prevent the alarm from future activation by covering the LDR with a non-light absorbent
substance in addition to sealing around all edges of the unit
This is the LDR (Light
Dependent Resistor).
The LDR is the SR2’s
Alarm Trigger Sensor
and activated by light
