GE NX-1448E - Security NetworX 48-Zone Fixed User Manual page 5

Your system will not work without power.
Warning devices will need to be loud enough, wired correctly, and
properly placed to provide notification of an alarm event.
Smoke and heat detectors may not detect heat and smoke in all
situations.Use qualified security professionals to install and maintain
your security system.
It may be possible to arm the security system without the backup
battery connected. Your periodic test should be done with AC Power
removed to verify the battery is connected and adequately charged.
Care should be taken to plug in and restrain the AC Transformer after
testing.
Please read the following information and instructions carefully
before operating your security control system.
NX1448E Icon Keypad Page 5