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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

ARM320-W2(868)

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ARM320-W2(868)

Dahua Wireless Input Expander

Key Points
    · Support six types of alarms: Intrusion, medical, fire, emergency, gas, and tamper.
    · Grant high security and stability of communication via a two-way wireless encrypted communication mechanism.
    · Triggers alarms when the device is moved.
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Datasheet

Specifications

Port

Alarm Input

2 (1 for alarm and 1 for anti-tampering)

Auxiliary Power Output

3.3 V, up to 10 mA

Function

Button

1 × power button

Remote Update

Cloud update

Low Battery Detection

Yes

Tamper

Yes

Measuring Range (Temperature)

–10 °C to +55 °C (+14 °F to +131 °F) (indoor)

Technical

Sensor

Triaxial accelerometer

LED Indicator

1 × green alarm indicator

Scenario

Indoor

Operating Current

45 uA (with 1 min heartbeat, normally open mode, charge not being provided for other devices and device moved alarm not enabled)

Alarm Current

50 mA

Wireless

Carrier Frequency

868.0 MHz–868.6 MHz

Transmitter Power (EIRP)

Limit 25 mW

Communication Mechanism

Two-way

Communication Distance

Up to 1600 m (5249.34 ft) in an open space

Encryption Mode

AES128

Frequency Hopping

Yes

General

Power Supply

3 × CR123A battery

Battery Model

CR123A

Battery Life

5 years (4 years if the external input type is pulse)

Power Consumption

Max. 150 mW (without providing charge for other devices)

Operating Temperature

–10 °C to +55 °C (+14 °F to +131 °F) (indoor)

Operating Humidity

10%–90% (RH)

Product Dimensions

102 mm × 39 mm × 21.5 mm (4.02" × 1.54" × 0.85")

Net Weight

77 g (0.17 lb)

Gross Weight

135 g (0.30 lb)

Installation

Surface mount, or mount inside a third-party device

Certifications

CE

EN 50131-1:2006+A1:2009+A2:2017+A3:2020

EN 50131-3:2009

EN 50131-6:2017+A1:2021

EN 50131-5-3:2017

Security Grade 2

Environmental Class II

Anti-corrosion Level

Basic Protection

Packaging Dimensions

95 mm × 43 mm × 139 mm (3.74" × 1.69" × 5.47")

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