A Back-Up Battery Prevents A Burglar Form Disabling The Alarm By Turning Off Power To The Building.
Price: R787.75
Weight: 2500 grams
Product Details:
A back-up battery provides power to a system when the primary source of power is unavailable. The back-up battery usually has a lifespan on three to ten years depending on the make and model, and if the battery runs flat, there is only one main source of power to the whole system which is the main power. This however means that the alarm cannot be stopped in any way apart from physically disabling the alarm. Most alarm panels operate on 12-volts, and use a sealed lead-acid battery. Often referred to as SLA batteries.
The first sign of alarm battery failure is usually a beeping keypad. The beeping or chirping will often occur at the same time every day (or night). This is because many panels do their automatic battery test every 24 hours. Less commonly, a low battery condition can cause false alarms at random time of the day or night. Almost all alarm panels will also display a keypad trouble to indicate a problem. Keypads with LCD displays will print out low batt, LB or something similar. Keypads with led lights may need you to press a button or two for the lights to show the trouble condition. Burglar alarms are generally reliable but if the internal battery is flat and will no longer hold charge it should be replaced as soon as possible.
A flat internal battery can mean that if there is a power outage, the external siren will sound because the hold off circuit to it is no longer present. If the outside siren does not have a self contained battery the alarm can still go into tamper mode and activate when the power is supplied to the alarm system (this is why many burglar alarms sound after a power cut). These batteries are very popular because unlike most battery types, sealed lead acid batteries are rechargeable.
Login
