Apparat av f.eks. roekvarslertypen og som lett kan funksjonsproeves fra avstand
摘要
A system for testing a remotely located sensing unit includes a photosensor located within the sensing unit. A control beam of incident electromagnetic energy can be provided from a remotely located portable source such as a flashlight. Directing the beam of radiant energy from the flashlight against the sensor in the unit causes the unit to initiate a test sequence. The unit can be equipped with a photo-detector to terminate an alarm generated in response to a sensed condition. The unit can include a sonic detector. Control circuitry in the unit can decode a sensed encoded incident beam to minimize false tests or to provide multiple remotely initiated functions.
申请公布号
NO174407(B)
申请公布日期
1994.01.17
申请号
NO19890003529
申请日期
1989.09.01
申请人
FIRST ALERT TRUST, THE, C/O CONTINENTAL BANK
发明人
BIRK, DANIEL J.;BELLAVIA, NICHOLAS J.;CONFORTI, FRED J.;SISSELMAN, RONALD J.