| 摘要 |
<p>The invention relates to an alarm arrangement that is activated independent of the theft that, by means of wireless transfer of an alarm signal and other suitable measures, can not be disabled without setting off the alarm. The alarm unit with the sensor mounted directly on the equipment that is to be protected. It comprises a sensor (19), a transmitter (23) and an electrical current supplying unit for supplying electrical current which has a battery (3) and a battery monitoring circuit.</p> |
