IPC Subgroup
G08B 13/181 using active radiation detection systems
Introduced: January 1990
Last revised: January 2006
Full Title
Burglar, theft or intruder alarms > Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength > using active radiation detection systems
Classification Context
- Section:
- PHYSICS
- Class:
- SIGNALLING
- Subclass:
- SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
2 direct subcodes
Child Classifications
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- G08B 13/183 by interruption of a radiation beam or barrier
- G08B 13/187 by interference of a radiation field