CPC Subgroup
G08B 25/01 characterised by the transmission medium
Full Title
Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems > characterised by the transmission medium
8 direct subcodes
Child Classifications
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- G08B 25/04 using a single signalling line, e.g. in a closed loop
- G08B 25/06 using power transmission lines
- G08B 25/08 using communication transmission lines
- G08B 25/10 using wireless transmission systems