Description
DHI-HY-SA21A-W2(868)
Dahua Wireless Smoke Alarm
Datasheet:
DHI-HY-SA21A-W2(868)
- Split-spectrum sensor technology
- Test and silence features in one single button
- Loud sound output over 85 dB(A) at 3 meters
- Low quiescent current consumption
- Surface-mount device (SMD) circuit board design
- Low battery warning signal
| Specification | Details |
|---|---|
| Working Principle | |
| Collection Type | Smoke |
| Sampling Period | 10 s |
| Sensor Type | Photoelectric |
| Alarm | |
| Alarm Type | Smoke alarm, fault alarm, low battery warning |
| Alarm Volume | 85 dB – 90 dB (A) at 3 m (9.84 ft) |
| Alarm Mode | Visual and audible alarm |
| Silence Function | Yes |
| Silence Duration | About 12 min |
| Alarm Response Threshold | 0.2 dB / m – 0.3 dB / m |
| Basic Parameters | |
| Indicator Light | Red and green LED indicator |
| LED Instructions | Standby: Green indicator flashes once per minute Alarm: Red indicator flashes once per second Fault: Red indicator flashes once per minute Low battery warning: Red indicator flashes once per minute |
| Coverage Area | When the height of the space is less than 8 m (3.28 ft), the protection area of a device is 20 m² – 40 m² |
| Power Supply | |
| Battery Life | 3 years |
| Operating Voltage | 3V CR123A lithium battery (replaceable) |
| Operating Current | Monitoring current: ≤ 35 uA Alarm current: ≤ 35 mA |
| Operating Ambient | |
| Operating Environment | Indoor |
| Operating Temperature | –10 °C to +55 °C (+14 °F to +131 °F) |
| Operating Humidity | ≤ 95 % RH (non-condensing) |
| Appearance | |
| Colour | White |
| Casing | ABS |
| Dimensions | φ98 mm × H43.1 mm (φ3.85″ × H1.70″) |
| Weight | 140 g (0.30 lb) |
| Installation | Ceiling Mount |
| Certifications | |
| Certifications | TÃœV and CE listed |
| Compliance Standard | EN 14604:2005 + AC:2008 |
| Wireless | |
| Carrier Frequency | 868 MHz – 868.3 MHz |
| Communication Distance | Up to 1000 m (3280.84 ft) in an open space |
| Communication Mechanism | Two-way |
| Frequency Hopping | Yes |
| Encryption Mode | AES128 |
