ALARM APPARATUS

摘要

Various electrical alarm systems are disclosed, incorporating any one or more of several novel features. Such features include a stand-by facility incorporating a chargeable battery normally kept charged by a power supply to which the alarm system is normally connected, a vehicle or the like alarm system, the activation and de-activation of which is controlled by a proximity detector detecting a predetermined signal-emitting device carried out the user's person and a personal attack alarm and a smoke alarm incorporated in an electronic wrist-watch.