Gent S4 SELF TEST Heat Sensor + Voice Sounder & High Power Red VAD

The S4T-720-V-VAD-HPR combines heat detection with a voice sounder and a High Power red VAD. A thermistor provides heat sensing, with the alarm response determined by the state selected at the panel. State 0 selects A1 heat detection and is the factory default. The other choices are state 5 for B, state 6 for BS, state 7 for A2S and state 13 for A2. The BS setting has no rate-of-rise component.

Heat self-test warms the thermistor. During the heating period, the detector sends analogue readings to the control panel, which checks the change in response over time. This model has heat sensing only. It does not detect smoke or carry out an optical self-test.

The voice sounder stores four default English messages and a bell tone. The messages cover emergency evacuation, waiting for further instructions, a system test and fire evacuation. An attention tone precedes the spoken message. The S4T speech function holds up to 20 seconds of audio; its normal 10-second signal period can be extended to 30 seconds. The stored messages can be reprogrammed. The High Power red VAD is ceiling mounted. Its category C coverage is C-3-14 at High Power, C-3-13 at Medium Power and C-3-10 at Low Power, corresponding to 461.8, 398.1 and 235.6 cubic metres. These coverage settings require compliant operation and a two-second flash period; High and Medium Power require an Enhanced Loop Card. Position the combined detector and VAD to meet both detection and visual-warning needs. Across the S4T range, outputs in the same sector synchronise across the loops of one panel. Synchronisation does not extend across a network of panels.

The head fits an S4-700 base with an S4-705 IP21C plate, mounted on a metal back box. Use screened two-core fire-rated loop cable with conductors from 1.5 to 2.5 mm² and maintain earth continuity. Supplied with one detector head and one orange dust cover. The cover protects the detector during building work and must be removed before commissioning. The S4T range has IP21C housings measuring 117 mm in diameter and 63 mm high, increasing to 70 mm with the standard base.

The S-Quad Self-Test range operates on Vigilon Plus and Compact Plus systems with compatible firmware, SD-card MCC or MCB hardware and a VIGPLUS-LPC-EN loop card. Self-test requires a CLSS gateway for each network domain, the CLSS mobile app and an active Self-Test licence. Run testing with the panel in Service mode. Configure the system with Vigilon Commissioning Tool V1.40 or later, and calculate the loop load and standby requirement with the Battery Standby and Loop Load Calculator.