Honeywell Intellisense FG-1625 25' Acoustic Glassbreak Sensor

The Honeywell FG-1625 is a commercial-grade, hardwired acoustic glassbreak detector designed to identify the sound of breaking glass and provide intrusion alarm notification through compatible security control panels. Part of the Honeywell FlexGuard Series, the FG-1625 incorporates patented FlexCore signal processing and Multiple Domain Signal Analysis to distinguish glassbreak events from common environmental sounds and reduce false alarms. Featuring a 25-foot (7.6-meter) maximum omnidirectional detection range and four selectable sensitivity settings of 5, 10, 15, and 25 feet, the detector supports protection of plate, tempered, laminated, wired, coated, and sealed insulating glass within manufacturer-specified thickness limits. The FG-1625 operates on 6-18 VDC, drawing approximately 12 mA at 12 VDC, and includes a Form A alarm relay, configurable LED indicators, and remote testing capability using the Honeywell FG-701 Glassbreak Simulator. Its compact white ABS housing supports wall, ceiling, or window-frame mounting. UL and ULC listed for applicable intrusion detection applications, the FG-1625 provides acoustic glassbreak monitoring for commercial offices, retail storefronts, residential properties, warehouses, and institutional security systems.

Honeywell FG-1625 FlexGuard Acoustic Glassbreak Detector with 25-Foot Range

The Honeywell FG-1625 FlexGuard Glassbreak Detector provides acoustic intrusion detection for commercial and residential security systems requiring protection against unauthorized entry through glass windows, doors, and other glazed openings. Manufactured by Honeywell, the FG-1625 combines FlexCore signal processing technology, Multiple Domain Signal Analysis, and an adjustable omnidirectional detection range of up to 25 feet (7.6 meters) to recognize acoustic patterns associated with the shattering of framed glass. Unlike conventional magnetic door and window contacts that monitor whether an opening has been physically displaced, the FG-1625 detects the characteristic sound generated when compatible glass is broken by direct impact. This capability allows a single detector to monitor multiple glass openings within its effective acoustic coverage area, subject to room acoustics, glass construction, and mounting location. Designed for integration with compatible hardwired intrusion alarm control panels, the FG-1625 is suitable for retail storefronts, commercial offices, residential buildings, educational facilities, warehouses, and institutional properties where glassbreak detection supplements perimeter contacts and interior motion sensors.

The FG-1625 incorporates Honeywell's FlexCore Application-Specific Integrated Circuit (ASIC), which processes acoustic signal information in parallel to improve detection response and reduce nuisance alarms. Its Multiple Domain Signal Analysis evaluates the timing, frequency, and amplitude characteristics of incoming sound to distinguish qualifying glassbreak events from unrelated acoustic disturbances. The detector provides four field-selectable sensitivity levels with approximate detection ranges of 5 feet (1.5 meters), 10 feet (3 meters), 15 feet (4.6 meters), and 25 feet (7.6 meters), allowing installers to configure its response according to room dimensions and acoustic conditions. The FG-1625 supports detection of plate glass, tempered glass, laminated glass, wired glass, coated glass, and sealed insulating glass within the thickness and distance limitations specified by Honeywell. Electrical operation requires 6-18 VDC, with typical current consumption of 12 mA at 12 VDC and maximum current consumption of 22 mA when the alarm LED is latched. The detector incorporates a Form A alarm relay rated at 125 mA maximum and 25 VDC maximum, with an approximately five-second alarm activation period. Its white, high-impact ABS enclosure measures approximately 3-7/8 inches high by 2-2/5 inches wide by 7/8 inch deep according to the manufacturer's product datasheet. The device is UL and ULC listed for applicable intrusion detection installations and has a specified UL operating temperature range of 14 F to 122 F (-10 C to 50 C).

For security system integration, the Honeywell FG-1625 provides a hardwired alarm output compatible with appropriately configured intrusion detection zones on Honeywell VISTA Series and other compatible security control panels. When the detector identifies acoustic characteristics consistent with a qualifying glassbreak event, its internal processing circuitry activates the alarm relay, allowing the connected control panel to register an intrusion condition. The detector incorporates normally closed and common alarm connections with provisions for end-of-line resistor wiring, supporting supervised alarm zone configurations when connected according to the control panel manufacturer's instructions. Its programmable LED functions allow technicians to enable or disable normal visual indication and select whether the red alarm LED illuminates temporarily or remains latched after an alarm event. The FG-1625 also supports Honeywell's patented remote test mode, which can be activated using the compatible FG-701 Glassbreak Simulator. The test function allows installers to verify detection performance and select appropriate sensitivity settings without repeatedly opening the detector housing. The system automatically exits test mode after approximately five minutes. Unlike the Honeywell FG-1625T, which includes a Form C alarm relay and integrated cover/wall tamper protection, the standard FG-1625 provides a Form A alarm relay without the additional tamper switch. This distinction is important when selecting devices for security applications requiring dedicated enclosure tamper supervision.

Installation of the Honeywell FG-1625 acoustic glassbreak detector supports mounting on a wall, ceiling, or suitable window-frame location, including the wall opposite, adjacent to, or containing the protected glass. The detector's 25-foot maximum omnidirectional range provides flexible placement, although actual coverage depends on acoustic conditions, obstacles, furnishings, and glass characteristics. Honeywell recommends positioning the device where it has a clear acoustic path to the protected glass and avoiding locations where heavy curtains, closed doors, or other sound-absorbing barriers could interfere with detection. The housing includes a centered wire entry opening, angled 45-degree terminal blocks, dedicated end-of-line resistor terminals, and a protected circuit board to simplify wiring and reduce installation-related damage. The manufacturer specifies 18-22 AWG wiring for power and alarm circuit connections. During commissioning, technicians configure the sensitivity DIP switches, select the LED operating mode, verify the alarm circuit configuration, and perform functional testing using the Honeywell FG-701 Glassbreak Simulator. The detector also provides a hand-clap diagnostic function for verifying basic microphone and signal-processing operation, although this test does not replace proper simulated glassbreak testing. The FG-1625 is designed to detect glass shattered by direct impact and may not consistently identify glass that is only cracked, broken by certain high-velocity projectiles, or fractured without an associated impact sound. Combining FlexCore acoustic processing, four sensitivity settings, broad glass-type compatibility, remote testing, and low-current hardwired operation, the Honeywell FG-1625 provides a practical glassbreak detection solution for commercial and residential intrusion alarm systems.