Gent S4 Black Dual Optical Heat Sensor Voice Sounder High Power red VAD

The S4BK-711-V-VAD-HPR combines dual optical smoke sensing, heat detection, voice sound and a High Power red visual alarm. Analogue channels 1, 2 and 4 carry forward optical, heat and backward optical readings; channel 5 reports sounder, speech and VAD faults. A short-circuit isolator is integral. State 0 combines normal optical sensitivity with Class A1 heat, and States 2, 6 and 11 have EN 54-5 approval only.

The ceiling VAD has three power settings. High Power gives C-3-14 coverage and additional O-4.5-14 coverage. Medium Power gives C-3-13 and O-4-13, while Low Power gives C-3-10. The flash interval is two seconds, or 0.5 Hz. The black body is a colour option: the sensor states and red VAD coverage match the white S4-711-V-VAD-HPR.

The sounder has EN 54-3 settings of continuous 933 Hz and alternating 933 Hz for 0.25 seconds followed by 700 Hz for 0.25 seconds. S-Quad speech devices use stored audio for an attention tone followed by a message, and factory messages can be reprogrammed. Sounder and VAD outputs synchronise across all loops of one panel; this synchronisation does not extend across a network of panels.

For S-Quad VADs, High and Medium Power require an Enhanced Loop Card. For the stated EN 54-23 coverage on Vigilon Plus and Compact Plus, use MCC/MCB software 4.52 or later, LPC software 4.48 or later and Vigilon Commissioning Tool V1.30 or later. On Nano, the VAD is fixed at Low Power. Earlier compatible panel software also limits the VAD to Low Power. Use the Battery Standby and Loop Load Calculator to size the loop and standby supply.

Fit the separately ordered S4BK-700 black base with the S4BK-705 black IP21 plate for EN 54-23 compliance. The S-Quad range achieves IP21C with its base on an IP21 plate. Its ABS head is 117 mm in diameter and 49.6 mm high, rising to 63.8 mm with the standard base. The range is loop powered at 35-48 V and operates from -10°C to +50°C, with storage from -20°C to +70°C.