Accessory alarm device of computer lock

Adjustable shield for vehicle mounted toll collection identifier

Air condition sensor housing with integral labyrinth

Alarm with removable detection circuitry cartridge

Anti-tamper bracket

Apparatus and method for mounting a detector

Apparatus and method pertaining to a doorbell chime cover

Apparatus for detect missing battery in smoke detector

Apparatus for replacing a battery in a battery powered device

Appliance for integrating multiple forms of communication

Attachment for smoke alarms

Audible and audible-visible alarms with interchangeable cover

Audible and audible-visible alarms with interchangeable cover

Audible combination light socket-adapter

Automatic appliance electric state signalling label

Automatic surveillance device

Automatically actuatable switch device