摘要:
A unit which includes a camera includes a movable member which can close an optical input port to the camera to provide a zone of privacy in the vicinity of the unit. The member can be moved manually or remotely by electrical signals, or received wireless signals.
摘要:
A glass break detector can be tested using a smart phone and a downloaded test application. The recommended test procedure can be implemented by interacting with the phone and the executing application. The phone can emit a selected audio test signal to which the detector can respond. Advantageously, the installer does not need to read a test procedure from a manual and does not need to use a special test tool.
摘要:
A hinged covered surface mountable housing for electrical components such as a magnetic reed switch, having an internal conductor channel and a plurality of routing paths with access means for routing an electrical conductor therethrough. The electrical status of the component is not impacted as a result of an accidental or intended opening or removal of the housing cover.