Standalone wireless fire alarm – Series 200
DAS-WSD-200Standalone wireless photoelectric smoke fire detector
Smoke detector of the Tan Vien Series 200 standalone wireless fire alarm system.
- Photoelectric smoke sensor, local sounder
- 444.4 – 444.8 MHz, 200 m unobstructed range
- Lithium-manganese 3 V battery, ≈ 5 years
- Inspected under 82/KĐ-PCCC, type-conformity certified to QCVN 47:2015/BTTTT
Part of the Series 200 standalone wireless fire alarm line. Does your project need a control panel that shows the location of each detector? See the Series 200A addressable wireless fire alarm system.
Photoelectric smoke detector with an integrated wireless module and local sounder. When the smoke density exceeds the threshold, the detector sounds locally and sends a signal to the DAS-WMS-200 to activate the entire system. Responds evenly to a wide range of fire types; powered by one 3 V lithium battery.
Key features
- Photoelectric smoke sensor. Labyrinth chamber resists interference, with balanced and stable response.
- Local sounder. Three beeps repeated about every 4 s on fire alarm; short beeps indicate low battery / fault.
- Self-monitoring. Reports sensor faults (yellow ≈ 2 s) and low battery < 2.75 V (yellow ≈ 30 s).
- 3-layer conformal coating. Moisture- and corrosion-resistant; base mounts with a 360° twist-lock and concealed screws.
Indicator status
| Power-on / seated in base | Green flashes once |
|---|---|
| Normal monitoring | Green flashes once every ≈ 6 min |
| Fire alarm | Red steady + 3 beeps / ≈ 4 s |
| Sensor fault | Yellow flashes once every ≈ 2 s + beep |
| Low battery (< 2.75 V) | Yellow flashes once every ≈ 30 s + beep |
Installation notes
- Mount at the center of the ceiling, horizontally, avoiding dead air spaces; keep ≥ 1 m from air-conditioning vents.
- Do not install in kitchens, garages, or places with heavy dust, steam, or air velocity > 15 m/s.
- Layout per TCVN 5738:2021 (ceiling ≤ 3.5 m: ≤ 85 m² per detector, spacing ≤ 9 m).
For detailed pairing, installation and commissioning procedures, see Series 200 Installation, Operation and Maintenance Manual (PDF). Operating principle: Series 200 diagrams and simulation.
Legal documents: Inspection certificate 82/KĐ-PCCC (PDF) · Type-conformity certificate QCVN 47:2015/BTTTT (PDF).
Suitable installation locations
DAS-WSD-200 technical specifications
| Model | DAS-WSD-200 |
|---|---|
| Rated voltage | DC 3 V – lithium-manganese battery |
| Monitoring / alarm current | < 100 µA / < 80 mA |
| Frequency / transmit power | 444.4 – 444.8 MHz / ≤ 17 dBm |
| Receiver sensitivity | −126 dBm |
| Communication range | ≤ 200 m (unobstructed) |
| Battery life | ≈ 5 years (normal conditions) |
| Dimensions / weight | Ø 115 × 48 mm / ≈ 144 g |
| Housing | White ABS plastic |
| Environment | Indoor; −10 °C to +50 °C; RH ≤ 95 % |
| Legal / standards | Inspection certificate 82/KĐ-PCCC · QCVN 47:2015/BTTTT type conformity · reference TCVN 7568-7 |
The communication range is a manufacturer's figure measured in an unobstructed space. Indoors, the signal attenuates through walls and concrete floors — always test the alarm at the actual installation position and add a DAS-WMS-200 as a repeater when needed.
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