A question about burglar alarm batteries скачать в хорошем качестве

A question about burglar alarm batteries

A quick technical question, triggered by around 20 power cuts last weekend that resulted in a lot of wailing alarm sirens around here (at night, too) due to dead panel batteries that haven't been changed in over a decade. If an alarm panel can take (both electrically and physically) a "7Ah size" battery, what are the reasons behind fitting a smaller battery, such as one with a 4Ah or 2.8Ah capacity? Or in the case of smaller panels such as a Scantronic 9448, fitting a 1.2Ah battery in a panel that can take a 2.2Ah battery? One of my neighbours has a Pyronix Sterling 10, these can handle a 7Ah battery but the installer fitted the 2.8Ah battery shown in this video. Trying to save a few quid or is there more to it?