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Dahua MultiVision 2.0 Expands Intelligent Monitoring with Wider Coverage, Sharper Details, Smarter Analytics and Easier Deployment

2026-05-28

Dahua MultiVision 2.0 Expands Intelligent Monitoring with Wider Coverage, Sharper Details, Smarter Analytics and Easier Deployment

ARA12-W2(915)

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ARA12-W2(915)

Dahua Wireless Siren

Key Points
    1. It features danger warning and intrusion determent.
    2. Frequency hopping function and two-way communication technology ensure communication stability.
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Datasheet

Specifications

Function

Indicator Light 1 × green alarm indicator
Button 1 × power button
Remote Update Cloud update
Low Battery Detection Yes
Tamper Yes

Technical

Test Mode Yes
Operating Current 3 VDC 1.5 A (max)
3 VDC 80 uA (standby)
Sound Pressure ≥ 105 ± 3 dB@1 m

Wireless

Carrier Frequency 915 MHz–928 MHz
Transmitter Power (EIRP) Limit 1 W
Communication Mechanism Two-way
Communication Distance Up to 1,000 m (3,280.84 ft) in an open space
Encryption Mode AES128
Frequency Hopping Yes

General

Power Supply 2 × CR123A batteries
Power Supply Type Type C
Battery Model CR123A
Battery Life Lasts for 2.5 years if alarms are triggered every two weeks, with each alarm sounding for 120 seconds.
Power Consumption 4.5 W (max)
0.24 mW (standby)
Operating Temperature –10 °C to +55 °C (+14 °F to +131 °F) (indoor)
Operating Humidity 10%–90% (RH)
Product Dimensions 81.0 mm × 81.0 mm × 26.0 mm (3.19" × 3.19" × 1.02") (L × W × H)
Net Weight 105 g (0.23 lb)
Gross Weight 175 g (0.39 lb)
Installation Bracket mount
Casing Material PC + ABS
Packaging Dimensions 135.0 mm × 98.5 mm × 56.8 mm (5.31" × 3.88" × 2.24") (L × W × H)

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