- Model
- Dahua HY-SA21A-W2 Wireless Smoke Alarm
- Sensor Type
- Photoelectric (Split-Spectrum Technology)
- Detection Type
- Smoke Detection
- Alarm Type
- Smoke Alarm, Fault Alarm, Low Battery Warning
- Alarm Volume
- 85–90 dB at 3m
- Alarm Mode
- Visual (LED) & Audible
- Silence Function
- Yes (Approx. 12 Minutes)
- Coverage Area
- 20–40 m² (Up to 8m Height)
- Frequency
- 433.1 – 434.6 MHz
- Wireless Range
- Up to 1000m (Open Area)
- Communication
- Two-Way with Frequency Hopping
- Security
- AES128 Encryption
- Indicators
- Red & Green LED Status Indicators
- Power Supply
- 3V CR123A Lithium Battery (Up to 3 Years Life)
- Operating Temperature
- -10°C to +55°C
- Installation
- Ceiling Mount
- Certifications
- CE, TÜV (EN 14604 Standard)
- Usage
- Home & Office Fire Safety, Smoke Detection
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