current item | |||
Power Source | |||
---|---|---|---|
Battery | Hardwired | Battery | Battery |
Alarm/Detector Features | |||
10-Year Battery, Hush Button, Tamper Resistant | Battery Back-Up, Hush Button, Tamper Resistant, Wire-free Interconnect | 10-Year Battery, Hush Button, Tamper Resistant | 10-Year Battery, Hush Button, Light Indicator, Tamper Resistant |
Pack Size | |||
1 | 1 | 2 | 2 |
Alarm Sensor Type | |||
Photoelectric | Photoelectric | Photoelectric | Photoelectric |
Alert Type | |||
Voice | Voice | Voice |
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