Description
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Model designation: SD119‑4HARB-12 (4‑wire)
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Operating voltage: 12V DC
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Detection technology: 4‑wire combined smoke and heat detector + Autoreset + siren
- Automatic Reset (AR): the device resets automatically after an alarm without power interruption
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Relay output: contact can be configured as N/O or N/C and Form A standard (1 A @ 30 VDC or 0.5 A @ 125 VAC)
| Parameter | Discription |
|---|---|
| Supply voltage | 12 V DC |
| Current consumption (standby) | ~100 µA |
| Alarm current | ~30 mA |
| Optical sensor sensitivity | 0.08–0.2 dB/m (EN) or 0.98–4 %/ft (UL) |
| Heat sensor | activates at ~57 °C |
| Dimensions (housing + base) | Ø 100 mm × 46 mm |
| Weight | approx. 130 g |
| Operating temperature | –10 to +50 °C |
| Humidity resistance | 0–95 % RH (non-condensing) |
✅ Functions & Features
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4‑wire connection
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Relay connection: selectable N/O or N/C contact, Form A type – supports various system types.
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Robust construction: durable SMD electronics and sensor
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Low-profile, modern design: sleek lightweight plastic housing, suitable for ceiling mounting, aesthetic design.
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False alarm prevention: advanced algorithms ensure reliability – reducing false alarms caused by dust or steam.
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LED indicator: visual display during an alarm.
- Built-in piezo siren
