描述
ARD2251E-W2(868)
Dahua Wireless External Triple-Tech Detector
ARD2251E-W2(868) 屬大華防盜警報產品。傑成系統有限公司（香港防盜）為大華產品安裝商及經銷商，可提供供應、安裝、調試、保養及維修。方案可參考防盜系統。規格以原廠資料為準。
規格
Function
| Indicator Light | 1 × green alarm indicator |
|---|---|
| Button | 1 × power switch; 1 × detection range adjustment switch |
| Remote Update | Cloud update |
| Low Battery Detection | Yes |
| Tamper | Tamper alarm |
| Moving detection | Yes |
Technical
| Detection Mode | PIR + Microwave |
|---|---|
| Sensitivity | PIR: 3 levels adjustable |
| Detection Range | Angle:90° Range:15 m (49.21 ft), the installation height is 1 m (3.28 ft) |
| Detection Speed | 0.3 m/s–2 m/s |
| Microwave Frequency | 24 G |
| White Light Resistance Level | 10,000 lux |
| Anti-masking | Yes |
| Two-way Digital Temperature Compensation | Yes |
| Scenario | Outdoor, indoor |
| Operating Current | 20 uA |
| Alarm Current | Without Camera: 26mA (Avg); 250 mA (Max) With Camera in Night: 380 mA (Avg); 1.5 A (Max) |
Wireless
| Carrier Frequency | 868.0 MHz–868.6 MHz |
|---|---|
| Transmitter Power (EIRP) | Limit 25 mW |
| Communication Mechanism | Two-way |
| Communication Distance | RF: Up to 1,600 m (5,249.34 ft) in an open space |
| Encryption Mode | AES128 |
| Frequency Hopping | Yes |
General
| Power Supply | CR123A × 4 |
|---|---|
| Battery Life | Without Camera: 5 years (triggers 10 alarms a day) With Camera: 3.5 years (triggers alarms twice a week) |
| Operating Temperature | –25 °C to +60 °C (–13 °F to +140 °F) |
| Operating Humidity | 10%–90% (RH) |
| Product Dimensions | 211 mm × 106 mm × 94 mm (8.31" × 4.17" × 3.7") |
| Installation Height | 0.8 to 1.3 m |
| Net Weight | 651 g (1.44 lb) |
| Gross Weight | 890 g (1.96 lb) |
| Installation | Wall mount, pole mount |
| Casing Material | PC + GF |
| Protection | IP66 |
| Certifications | CE EN 50131-1:2006+A1:2009+A2:2017+A3:2020 EN 50131-6:2017+A1:2021 EN 50131-5-3:2017 EN 50131-2-4:2020 Security Grade 2 Environmental Class IV |
| Anti-corrosion Level | Basic Protection |
| Storage Temperature | –25 °C to +60 °C (–13 °F to +140 °F) |
| Packaging Dimensions | 251 mm × 116 mm × 119 mm (9.88" × 4.57" × 4.69”) |
