DSC PG9935 Wireless Glass Break Detector

DSC PG9935 Wireless Glass Break Detector

Overview

The DSC PG9935 is a flush-mount wireless glass break detector designed for seamless integration into security systems requiring discreet perimeter monitoring. This detector identifies the acoustic signature of breaking glass, triggering alarm response when glass breakage is detected. The PG9935 operates wirelessly, eliminating the need for hardwired connections and simplifying installation in retrofit and new construction applications. Its compact profile and white finish make it suitable for ceiling installations where visual impact must be minimized.

Key Features

• Flush Ceiling Mount Design: Recessed installation option provides aesthetic concealment while maintaining full detection sensitivity.
• Wireless Transmission: Operates on a wireless protocol, reducing installation complexity and enabling flexible sensor placement without conduit runs.
• 128-Bit AES Encryption: Protects wireless communication between the detector and system panel, preventing signal interception and unauthorized triggering.
• Extended Battery Life: Single CR123A lithium battery provides up to 7 years of operation, reducing maintenance cycles and lowering long-term operational costs.
• Wide Operating Temperature Range: Functions reliably from -10°C to 55°C (14°F to 131°F), supporting deployment in climate-controlled and non-climate-controlled spaces.
• White Finish: Matches standard ceiling aesthetics, minimizing visibility in commercial and residential environments.

Integration & Compatibility

The PG9935 integrates with DSC wireless security system panels that support encrypted wireless sensors. The 128-bit AES encryption ensures secure communication and is compatible with modern DSC system architectures. Integrators should verify that the receiving panel supports the PG9935's wireless frequency and encryption standard before deployment. The detector's wireless nature allows it to function in locations where running sensor wiring is impractical, such as leased spaces or buildings with structural limitations.

Operational Considerations

Glass break detection relies on acoustic pattern recognition; the PG9935 distinguishes breaking glass from other loud noises. Placement should target windows and glass doors most vulnerable to forced entry. The 7-year battery life simplifies maintenance scheduling—most installations will require battery replacement only during system refresh cycles. Battery status is typically reported to the panel, allowing technicians to schedule proactive replacement before depletion occurs.

Ted Perry

I've specified the DSC PG9935 in multiple retrofit installations where running hardwired glass break sensors would have required significant drywall and trim work. The wireless architecture made this detector a practical choice, and the 128-bit AES encryption gave the security director confidence that the perimeter monitoring couldn't be spoofed or jammed by simple RF attacks.

Technical Highlights:

• Wireless Deployment: Eliminates conduit and wiring runs, reducing installation time and materials cost—particularly valuable in occupied facilities.
• Encryption Standard: 128-bit AES is the current industry minimum for wireless security sensors; the PG9935 meets modern compliance and insurance requirements.
• Battery Longevity: 7-year CR123A battery life aligns with typical system refresh cycles, reducing unplanned service calls.

Deployment Considerations:

• Verify panel compatibility before ordering—not all DSC panels support the PG9935's wireless frequency or encryption method.
• Position detectors within reliable RF range of the panel, and avoid mounting directly behind metal studs or HVAC ducts that may degrade signal strength.
• Test acoustic sensitivity during commissioning to confirm the detector responds to the expected glass breakage patterns for your facility's window types.

The PG9935 is a solid choice for integrators supporting mid-range DSC systems that need flexible, secure glass break monitoring without the installation burden of hardwired sensors. I'd recommend it for any retrofit project where wire runs are impractical or cost-prohibitive.