Dahua Alarm Wireless Indoor Siren - ARA12-W2 - 868

Wireless siren

• Signal strength detection
• Low battery alarm
• Temperature measurement
• Frequency hopping function and two-way communication technology
• Cloud update and automatic recovery from update failure

Port

• Indicator Light : 1 × green alarm indicator
• Button : 1 × power button

Function

• Tamper Alarm : Yes
• Remote Upgrade : Cloud update
• Test Mode : Yes
• Low Battery Alarm : Yes
• Search : Signal strength detection

Wireless

• Carrier Frequency : 868.0 MHz–868.6 MHz
• Communication Distance : Up to 1,000 m in an open space
• Communication Mechanism : Two-way
• Frequency Hopping : Yes
• Encryption Mode : AES128

General

• Power Supply : 2 × CR123A batteries
• Power Consumption : Max. 240 mW
• Operating Temperature : –10 °C to +55 °C (indoor)
• Operating Humidity : 10%–90% (RH).
• Product Dimensions : 81.0 mm × 81.0 mm × 26.0 mm (L × W × H)
• Packaging Dimensions : 135.0 mm × 98.5 mm × 56.8 mm (L × W × H)
• Installation : Bracket mount
• Net Weight : 105 g
• Gross Weight : 175 g 
• Certifications : CE
• Battery Life : 2.5 years in working status (triggered twice every week and alerts 120 s for each triggering)
• Sound Pressure : ≥ 105 ± 3 dB1M
• Casing : PC + ABS

Temperature

• Measuring Range : –15 °C to +65 °C (indoor)
• Measuring Precision : ± 1 °C
• Resolution : 1 °C 

Audio/Video Parameter

• Volume Adjustment : 3 volumn levels