The 9120 Series smoke alarms have been designed to install faster, perform better and be even smarter than before. These improvements help reduce nuisance alarms and save you time and money. Single button test/silence 9V Battery Backup Latching alarm indicator - remembers which unit initiated an alarm Smart Technology - helps reduce the number of nuisance alarms Perfect Mount - allows for easy alignment of alarm Dust Cover Easy Installation/Maintenance - Preferred features include a large opening in the mounting bracket for easy access to wiring. Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation. A battery pull tab keeps the battery fresh until the home is occupied. Battery installation and removal can occur while the unit is mounted to the ceiling or wall via the side load battery compartment. Two locking features are provided to prevent battery theft and/or theft of the unit. Connection to AC power is made with a "Quick-Connect" wiring harness. Installation is quick, easy and cost effective. 10-Years Limited Warranty Model # 9120B Weight 7.8 oz Dimension 5.6" dia x 2.0"H Operating Voltage 120V AC 60Hz w/ 9V battery backup (9120B only) Operating Current .04 amps (standby/alarm) Temperature Range 40°F (4°C) to 100°F (38°C) Humidity Range 10% to 90% relative humidity (RH) Audio Alarm 85dB at 10 feet Test/Silence Electronically simulates smoke condition, causing the unit to alarmPress and hold test/silence button Alarm Reset Automatic when smoke clears Interconnections Up to 18 units of First Alert or BRK Smoke, CO and Heat Alarms. Maximum of 12 smoke alarms. See user's manual for details. Smoke Sensor Dual chamber ionization Indicator Lights/Sounds AC Power: Constant Green LED DC Power: Intermittent Red LED (9120B only) Local Alarm: Red LED flashes rapidly Remote Alarm: Red LED out. Latching Alarm: Green LED flashes 2 sec. on/2 sec. off after local alarm Listing Listed to UL217 Standard
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