Customer Reviews For The USI Electric Hardwired Photoelectric Smoke Alarm with Battery Backup (MP117)
Working fine. Easy to replace the old one.
We purchased our home about five years ago, it was built in 2007. We have some very high ceilings and the house came with eight ASI Electric Hardwired Photoelectric Smoke & Fire Alarms w/Battery Backup. We were replacing batteries but were still having problems with beeping and the alarm going off.. We decided to replace some units and were unsure of replacement units that we could find locally. We went online to Universal Security Instruments Store and found exactly what we needed at about half the price found locally. We easily ordered online, received free shipping and delivery within a week.
Easy to install and working well. Met my needs as anticipated.
Easy to install. Relief to know my family is protected.
Smoke alarm worked great. Installed easy and quick.
Bought this smoke alarm to replace an older model. It took less than 5 minutes to change out. Happy with unit and ease of installation.
AC powered smoke alarms with battery backup will chirp indefinitely assuming AC power is present; if battery power is low, or battery is removed; until a fresh battery is installed. Approved replacement batteries are listed on the back of each smoke alarm and in the user's manual.
Certain model smoke alarms with a silence button (designed to silence the alarm during a nuisance alarm) may chirp to indicate the smoke alarm is in the silence mode. The chirp will stop after approximately 8 minutes and the smoke alarm will return to its normal operation.
If battery backup alarms and non-battery backup alarms and accessories are mixed in an interconnect system, all devices without battery backup WILL NOT operate during an AC power failure.
CAUTION: USI alarms and accessories should only be interconnected with other USI alarms and accessories. Connecting devices from another manufacturer to USI devices may result in nuisance alarms, failure to alarm, or damage to one or all of the devices in the interconnect system. All interconnected USI alarms should be powered by the same fuse or circuit breaker. Smoke alarms shall not receive their power from a circuit that is protected by a ground fault circuit interrupter. Improper connection will result in damage to the alarm, failure to operate, or a shock hazard.
This USI Hardwired Photoelectric Smoke and Fire Alarm features a quick activation pull-tab and a front-loading battery drawer for replacement without removing the alarm from the bracket. Mount the bracket to any standard wiring junction box and use the large mounting base to cover imperfections in drywall. The plastic dust cover protects the alarm from debris and (2) tamper-resistant locks prevent unwanted alarm or battery removal. For maximum protection, install an alarm inside every bedroom, outside every sleeping area and on all levels of the dwelling. The USI Electric MP117 Hardwired Photoelectric Smoke and Fire Alarm comes with a 10 year limited warranty.