GBD PLIUS, glassbreak detector, Crow

Small description: The GBD-PLUS is a compact glass-break and/or shock detector designed for ceiling or wall mounting. Using dual-frequency detection (shock + glass break), it is engineered for minimal false alarms and provides volume protection of glazed areas.

Main features

• Detection method: electro-condenser microphone analyzing two sequential signals: a shock impact and subsequent glass break.
• Shock and/or glass selectable: jumper setting allows selection of shock only, glass break only, or both.
• Volume protection: does not require mounting on each individual window; one unit may cover multiple glazed panels.
• Sensitivity adjustment: separate potentiometers for shock and glass, plus sensitivity-reduction jumper (50 % mode).
• Memory LED: keeps red LED lit after alarm until reset, enabling identification of triggered detector.
• Mounting options: ceiling or wall.

Compatibility

• Supply voltage: 9–16 V DC.
• Alarm output: N.C. relay output 50 mA / 24 V DC with in-line resistor (apie 10 Ohm).
• Tamper switch: N.C. 50 mA / 24 V DC (10 Ohm series).

Notes

• Detection range: up to ~10 m (33 ft) for glass break/shock.
• Warm-up period: ~60 s (±5 s) after power up.
• Alarm period: ~2 s (±0.5 s).
• Current consumption: Standby ~22 mA; Active ~25 mA (at 12 V).
• Operating temperature: -20 °C to +50 °C.
• Dimensions: ~78×51×21 mm.
• RFI/EMI immunity: 30 V/m (10–1000 MHz); 50 000 V from lightning/surges.