How to Recharge Security Alarm Battery
As professional in security industry, we all know what the battery means to a security alarm. With battery back-up, the alarm system can work as well to keep safe when there's problem with the AC power.
In real life, people usually plug in the alarm system directly, and forget to keep the power button under "on" status. In this case, the battery will not get charged.
To get battery charged, user should make sure that the power button is under "on" status.