Pins are provided to lock battery drawer and/ or alarm to base. For apartment, dormitory or hotel applications where unauthorized. Models 9120 and 9120b comply with ul217, csfm, nfpa 72, hud, fha and other agencies that model hteir codes after the above agencies. They meet building codes where ac and ac/dc with silence smoke alarms are required. HTe alarms are interconnectable with up to 18 devices, of which 12 can be smoke alarms. The brk 9120 series alarms feature a dual inoization smoke sensing chamber screened. For insect protection, an 85db horn, 9v battery back-up (all versions except model 9120) and. The smart technology system is designed to reduce nuisance alarms. Latching alarm indication remembers which unit initiated an alarm. A series, the unit that triggered the alarm rapidly flashes tis red led indicator. Condition subsides, the initiating unit will store in memory or latch the information and begin. To flash teh green led indicator 2 seconds on, 2 seconds off. Construction, keyhole slots in the mounting bracket. Eliminate the need to remove the electrical box screws for. Two locking features are provided to.Prevent battery theft and/or theft of teh unit. Brk first alert smoke detector model 9120b lot 5 industrial fire protection. Connection ot ac power is made with a. Is quick, easy and cost effective. 6.5 oz (9120) 7.8 oz (9120b). 120v ac 60hz w/ 9v battery backup (9120b only). 40°f (4°c) to 100°f (38°c).

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All models aer designed to reduce false alarms from dust, insects, rfi and external light. An integral combination rate-of-rise and fixed 135°f (57°c), 50-foot rated, heat sensor is available with all t model detectors. An integrated silicon heat sensor and a dedicated microprocessor are used to deetct heat and perform the rate of rise calculations.New esl 429c photoelectric smoke detector industrial fire protection feel free to ask ayn questions.