At a glance
- Sensor
- Triaxial accelerometer
- Battery Life
- 5 years
- Operating Temperature
- 10 °C to +55 °C (indoor)
- Installation
- Surface mount, or mount inside a third-party device
- Carrier Frequency
- 433.1 MHz to 434.6 MHz
- Communication Distance
- Up to 1300 m (4265.10 ft) in an open space
Model ARM320-W2Dahua ARM320-W2 Wireless Alarm Input Expander Module
₹3,422 Incl. GST
₹2,900 + 18% GST
At a glance
- Sensor
- Triaxial accelerometer
- Battery Life
- 5 years
- Operating Temperature
- 10 °C to +55 °C (indoor)
- Installation
- Surface mount, or mount inside a third-party device
- Carrier Frequency
- 433.1 MHz to 434.6 MHz
- Communication Distance
- Up to 1300 m (4265.10 ft) in an open space
Small battery module that brings a wired detector into a Dahua wireless alarm, or fits inside another device so it joins the system. One alarm and one tamper input, 3.3 V output, and an accelerometer that reports if the module is moved.
- WarrantyManufacturer warranty under Dahua's terms. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
- InstallationSurface mount, or mount inside a third-party device
Overview
The Dahua ARM320-W2 is a battery-powered wireless input module. It reads one wired alarm input plus a tamper input and passes events to a Dahua 433 MHz hub, and a built-in three-axis accelerometer can report if the module itself is moved. Use it to bring a third-party wired detector into a Dahua wireless alarm, or fit it inside another device’s housing so that device joins the wireless system. It suits retrofits where cabling to the panel is difficult.
Is it right for you?
- It suits one wired detector, or one device you want to make wireless, in a Dahua 433 MHz alarm.
- It can power a low-current detector from its 3.3 V output (up to 10 mA); for a detector that draws more, the detector needs its own supply.
- If you only need a plain dry-contact input and no auxiliary power, the ARM310-W2 is the simpler model.
- Indoor use only, -10 to 55 °C.
Key features
- One alarm input and one anti-tamper input.
- Supports intrusion, medical, fire, emergency, gas and tamper alarm types.
- 3.3 V auxiliary output up to 10 mA to power a low-current detector.
- Built-in triaxial accelerometer for a device-moved alarm.
- Up to 1,300 m open-space range with frequency hopping and AES128 (Advanced Encryption Standard) encryption.
- Surface mounting, or mounting inside a third-party device.
- Runs on 3 CR123A batteries, rated for about 5 years, or 4 years if the input is set to pulse.
- Low battery detection, test mode and cloud updates.
What else you need
A Dahua 433 MHz wireless hub, the Dahua app, 3 CR123A batteries and the detector or device it will connect. Check that any detector powered from the auxiliary output draws no more than 10 mA at 3.3 V.
Installation
An alarm installer can fit it. Mount it on a surface near the detector or inside the device housing, wire the alarm and tamper inputs and, if used, the 3.3 V output, then pair it with the hub and choose the alarm type in the Dahua app.
Software and licences
Alarm type, input mode and the device-moved alarm are set in the Dahua app. Firmware updates arrive through the cloud.
Before you buy
- Feeding power to an external detector shortens battery life.
- The auxiliary output is limited to 10 mA at 3.3 V.
- Indoor use only.
Features
Size and fit
- Net Weight
- 77 g (0.17 lb)
- Installation
- Surface mount, or mount inside a third-party device
Technical specifications
Key facts
- What is it?
- Alarm accessoryBrand Dahua, model ARM320-W2
- How is it powered?
- 3 × CR123A battery
- Which documents are available?
- Datasheet, user manual, installation / drawing (2), safety / legal information, quick start guide, and more Open documents
- Can SecurityGearHub help with installation?
- Setup guidanceManuals, wiring guides and answers to setup questions. On-site work is arranged separately where available. Ask about installation
- Not stated by the manufacturer
- outdoor rating, box contents
RelatedDocumentsAll Dahua documents
General
- Model
- ARM320-W2
- Alarm Input
- 2 (1 for alarm and 1 for anti-tampering)
- Auxiliary Power Output
- 3.3 V, up to 10 mA
- Button
- 1 × power button
- Remote Update
- Cloud update
- Low Battery Detection
- Yes
- Sensor
- Triaxial accelerometer
- Test Mode
- Yes
- 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
- Carrier Frequency
- 433.1 MHz to 434.6 MHz
- Communication Mechanism
- Two-way
- Communication Distance
- Up to 1300 m (4265.10 ft) in an open space
- Encryption Mode
- AES128
- Frequency Hopping
- Yes
- Battery Model
- CR123A
- Installation
- Surface mount, or mount inside a third-party device
- Anti-corrosion Level
- Basic Protection
Input
- Power Supply
- 3 × CR123A battery
- Battery Life
- 5 years (4 years if the external input type is pulse)
- Power Consumption
- Max. 150 mW (without providing charge for other devices)
Protection
- Tamper
- Yes
Environment
- Measuring Range (Temperature)
- , 10 °C to +55 °C (+14 °F to +131 °F) (indoor)
- Operating Temperature
- , 10 °C to +55 °C (+14 °F to +131 °F) (indoor)
- Operating Humidity
- 10% to 90% (RH)
Physical
- 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)
- Packaging Dimensions
- 95 mm × 43 mm × 139 mm (3.74" × 1.69" × 5.47")
Approvals
- Certifications
- CE
- Warranty
- Manufacturer warranty under Dahua's terms. How claims work
Product attributes and shipping details
| Brand | Dahua |
|---|---|
| Radio Frequency | 433.1 MHz–434.6 MHz |
Downloads
Documentation
- Dahua ARM320-W2 datasheetDatasheet · This model · 369.6 KBDownload
- Dahua ARM320-W2 product pageOnline specifications · This model · dahuasecurity.comView official page
Certificate and compliance document (1)
- Dahua important safeguards and warnings V3.0.0Safety / legal information · General · materialfile.dahuasecurity.comDownload
User manual
Installation guide
Series documents can differ from your exact model. Report a wrong or missing file
Questions about this product
Can it power the detector I connect?
Yes, a low-current one: the auxiliary output gives 3.3 V at up to 10 mA. Using it shortens battery life.
How long do the batteries last?
About 5 years on 3 CR123A batteries, or 4 years if the input is set to pulse, before allowing for any detector powered from the module.
What does the accelerometer do?
It raises a device-moved alarm if the module is shifted or removed.
Which hubs does it work with?
Dahua 433 MHz wireless alarm hubs, paired through the Dahua app.
Can it be used outdoors?
No. It is rated for indoor use, -10 to 55 °C.
Ask about this modelSetup, compatibility, what is in the box
Answers are automated. Do not enter personal or account details.
Looking for an alternative?
We list alternatives only when we have checked they suit the same job. Compare other models in the category, or ask us to suggest one for your site.