Access Code Does not Activate the Device that the Keypad is Connected to (Red LED triple flashes every four seconds)

Access Code Does not Activate the Device that the Keypad is Connected to (Red LED triple flashes every four seconds)

LED output: Red LED triple-flashes rapidly every four seconds. The tone of the onboard buzzer will also be different from its normal pitch when pressing keys

Possible causes: 

Battery voltage low (SMARTGUARDair)

 

Possible solutions: 

Replace batteries