| 摘要 |
A portable alarm is provided with a smoke detecting mechanism and circuit connected to an audible signal activated on the presence of smoke and all contained in a compact housing. To this conventional combination the invention interposes a connector means in the circuit between the detector and alarm which connector means includes a highly visible elongated external hanging electrical lead that is plugged into an opening in the housing to complete the circuit through the electrical lead thus, at all times, conspicuously indicating the armed/unarmed condition of the alarm.
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