The DSC BV-500GB Bravo 5 is a ceiling-mounted hardwired sensor that is used for detecting both motion and the sound of breaking glass. The device is one of the few sensors that offers this type of multipurpose functionality. The device has 360 degree coverage to detect any problem below.
The motion detector is a passive infrared (PIR) sensor that looks for changes in infrared energy caused by movement. The quad element PIR sensor uses multi-level signal processing (MLSP), to always actively distinguish between human intruders and other possible sources of motion. Temperature compensation will allow the motion detector to function in any environment, even when the temperature is identical to that of the human body. The sensor can be adjusted for high and low sensitivity.
The glass break sensor is based around a micro-controller that uses digital signal processing technology. With Dynamic Signal Processing, the sensor can accurately detect the breaking of plate, laminated, wired and tempered glass. Meanwhile, it will ignore any "bell" or "ringing" sounds that occur at similar frequencies. This is great for preventing any false alarms that would otherwise occur. A "white noise" rejection mechanism will be prevent the sensor from being activated by irrelevant background noises.
For best results, the BV-500GB should be mounted on the ceiling, with a direct line of sight to any glass that it is monitoring. The motion sensor will look downward and detect any motion that is present. Ideally, the sensor should not be facing any reflective surfaces, heavy air flow, moisture, sunlight or obstructions. It is also wise to not place the sensor directly next to any noise-making devices. Following these guidelines will allow the sensor to function well as both a glass break sensor and as a motion sensor.
Please note that this version of the Bravo 5 uses Form A wiring (normally closed only) for the motion and Form C wiring (normally open or normally closed) for the glass break sensor. The device does not include a tamper switch. DSC also produces a version of the same sensor that does include a tamper switch (BV-501GB). There's also the BV-502GB, which is Form C for both the motion and the glass break, and it also includes a tamper switch. DSC also produces these same three sensors with only a ceiling-mount PIR motion and no glass break (BV-500, BV-501 and BV-502).