Battery compartment adapter cap for control of electric...

Details Battery compartment adapter cap for control of electric... Battery compartment adapter cap for control of electric...

2005-02-14

2008-12-02

Le, Que T. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S239000, C250S205000

Reexamination Certificate

active

07459666

ABSTRACT:
A signalling device comprising an emission module operative on the application of battery power from a battery pack for the emission of a signal from at least one electromagnetic radiation emitting element, a battery compartment and a cap for retaining said battery pack in said battery compartment. The cap comprises at least one sensor and a switch for controlling the application of battery power. The switch is actuated when the at least one sensor detects a change in the environment in the vicinity of the device. Alternatively, the switch can be actuated remotely through a wireless interface or via a trip wire.

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