CPC G08B 5/38 (2013.01) [G08B 5/36 (2013.01); G08B 17/06 (2013.01); G08B 17/103 (2013.01); G08B 17/117 (2013.01)] | 16 Claims |
1. A life safety device comprising:
a housing;
a transmitter for generating a light, the transmitter being positioned within the housing;
a receiver for measuring ambient light around the life safety device, the receiver being positioned within the housing adjacent the light transmission device; and
a light transmission device disposed within the housing adjacent to the transmitter, a first end of the light transmission device being visible at an exterior of the housing, the light transmission device including:
at least one port located adjacent to the transmitter and being operable to communicate light from the transmitter to a first end; and
a post separate from the port for communicating the ambient light to the receiver;
wherein in a first mode of operation of the life safety device, a first light source is operable as the transmitter and a second light source is operable as the receiver and in a second mode of operation of the life safety device, the second light source is operable as both the transmitter and the receiver.
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