At a glance
- Operating Temperature
- 10 °C to +50 °C
- Installation
- Wall mount
- Protection
- IP30
- Network Mode
- Ethernet
- Communication Distance
- Up to 1,200 m (3937.0 ft) in an open space
- Storage Battery
- Yes (12 V
Model ARM9A4-P-W2Dahua ARM9A4-P-W2 Network and Wireless Multi-I/O Transmitter with PoE
₹15,527 Incl. GST
₹13,158 + 18% GST
At a glance
- Operating Temperature
- 10 °C to +50 °C
- Installation
- Wall mount
- Protection
- IP30
- Network Mode
- Ethernet
- Communication Distance
- Up to 1,200 m (3937.0 ft) in an open space
- Storage Battery
- Yes (12 V
Connects up to 16 wired detectors in a separate block, basement or warehouse bay to a Dahua alarm hub, over Ethernet where radio is unreliable or by 433 MHz radio. 4 relay outputs, Power over Ethernet (PoE) or mains, takes a 12 V 7 Ah battery (not included).
- WarrantyManufacturer warranty under Dahua's terms. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
- InstallationWall mount
Overview
The Dahua ARM9A4-P-W2 is the network version of Dahua’s multi input and output transmitter. It gathers 16 wired alarm inputs and 4 relay outputs in one wall-mounted box and connects to the alarm hub either by 433 MHz radio or over Ethernet. It suits a separate block, a basement or a warehouse bay where a group of wired detectors sits far from the hub, and where radio is unreliable the Ethernet link carries the signals over the existing network instead.
Is it right for you?
- It suits a cluster of wired detectors far from the hub, in a Dahua wireless alarm, where a network cable is available.
- If radio alone is enough and there is no network at that spot, the ARM9A4-W2 is the radio-only model.
- On Power over Ethernet (PoE) the auxiliary output is 1 A in total, half the 2 A on mains, so check the draw of connected detectors and sirens.
- Indoor use only, IP30, -10 to 50 °C.
Key features
- 16 wired alarm inputs with 0EOL, EOL, 2EOL and 3EOL (end-of-line resistor) wiring; inputs 1 to 6 also support pulse detection; detector cable runs up to 500 m.
- 4 relay outputs rated up to 30 V DC, 3 A.
- One RJ-45 10/100 Mbps Ethernet port with PoE (IEEE 802.3at), so one cable can carry both the link and the power.
- Three power options: PoE, 100 to 240 V AC mains, and a 12 V 7 Ah backup battery.
- 2 auxiliary 14.5 V outputs for detectors and sirens: 1 A in total on PoE, 2 A on mains.
- Radio range up to 1,200 m in open space, with frequency hopping and AES128 (Advanced Encryption Standard) encryption.
- Up to 30 hours of static standby on the backup battery; tamper, low battery detection and cloud updates.
What else you need
A Dahua wireless alarm hub and the Dahua app. For PoE you need an 802.3at (PoE+) switch port or injector; otherwise a mains supply. The 12 V 7 Ah backup battery is not included. Wired detectors need end-of-line resistors to match the chosen wiring mode.
Installation
An alarm installer should fit it. The box is wall mounted indoors, connected to PoE or mains and the backup battery, and the detector and output cables are terminated in the chosen end-of-line mode. It is then paired with the hub by radio or added over the network.
Software and licences
Pairing and zone setup use the Dahua app. Firmware updates arrive through the cloud.
Before you buy
- The backup battery is not included.
- On PoE the auxiliary output current is halved to 1 A, so check the total draw of connected detectors and sirens.
- Indoor use only, IP30.
Features
Size and fit
- Net Weight
- 1.22 kg (2.69 lb)
- Installation
- Wall mount
Technical specifications
Key facts
- What is it?
- Alarm accessoryBrand Dahua, model ARM9A4-P-W2
- How is it powered?
- 100 to 240 V AC, 50/60 Hz. PoE (802.3at)
- Can it be used outdoors?
- IP30
- Which documents are available?
- Datasheet, user manual, installation / drawing (3), 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
- box contents
RelatedDocumentsAll Dahua documents
General
- Model
- ARM9A4-P-W2
- Alarm Input
- Supports local 16-channel alarm input,1 to 6 channels support pulse detection,and 1 to 16 channels support 0EOL/EOL/2EOL/3EOL connected to a maximum of 500 m (1640.42 ft),(cable typed Rvv2 x 2.6，No strong electricity signal interference)
- Alarm Output
- Supports 4 local channels(Max 30 V DC, 3 A)
- Network Mode
- Ethernet
- Network Port
- 1 × RJ-45 10/100 Mbps Ethernet port; PoE power supply
- Storage Battery
- Yes (12 V, 7 Ah.The backup battery is not included in the set）
- Auxiliary Power Output
- 2 built-in auxiliary output, 14.5 V, total 1 A (PoE), 2 A (Non PoE)
- Indicator Light
- One indicator (indicator status)
- Button
- 1 × switch button, 1 × reset button
- Remote Update
- Supports cloud update
- Low Battery Detection
- Yes
- Scenario
- Indoors
- Carrier Frequency
- 433 MHz
- Transmitter Power (EIRP)
- limit 10 mW
- Communication Mechanism
- Two-way
- Communication Distance
- RF: Up to 1,200 m (3937.0 ft) in an open space
- Encryption Mode
- AES128
- Frequency Hopping
- Yes
- Power Supply Type
- Type A
- Standby Time
- Static standby: Up to 30 hrs
- Installation
- Wall mount
- Anti-corrosion Level
- Basic Protection *The products are designed for general use and are applicable even in areas with no specific requirements for anti-corrosion protection.
Input
- Power Supply
- 100 to 240 V AC, 50/60 Hz. PoE (802.3at)
- Power Consumption
- 220 V AC quiescent current (40 mA Irms) 220 V AC max current@2Aload + charge (315 mA Irms) POE quiescent current (125 mA) POE max current@0.75Aload + charge (612 mA)
Protection
- Tamper
- Yes
Environment
- Operating Temperature
- , 10 °C to +50 °C (+14 °F to +122 °F)
- Operating Humidity
- 10% to 90%
- Protection
- IP30
- Storage Temperature
- , 10 °C to +55 °C (+14 °F to +131 °F)
- Storage Humidity
- 10% to 90%
Physical
- Product Dimensions
- 304 mm × 235 mm × 90.8 mm (11.97" × 9.25" × 3.57")
- Net Weight
- 1.22 kg (2.69 lb)
- Gross Weight
- 1.78 kg (3.92 lb)
- Casing Material
- PC + ABS
- Appearance Colour
- White
- Packaging Dimensions
- 369 mm × 140 mm × 280 mm (14.53" × 5.51" × 11.02") (L × W × H)
Approvals
- Certifications
- CE
- Warranty
- Manufacturer warranty under Dahua's terms. How claims work
Product attributes and shipping details
| Brand | Dahua |
|---|---|
| IP Rating | IP30 |
| Connectivity | Ethernet |
| Radio Frequency | 433 MHz |
Downloads
Documentation
- ARM9A4-P-W2 datasheet 20251202Datasheet · This model · materialfile.dahuasecurity.comDownload
- Dahua ARM9A4-P-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
- ARM9A4-P-W2 Rendergraph Application ENInstallation / drawing · This model · materialfile.dahuasecurity.comDownload
- ARM9A4-P-W2 INSTALLATION METHOD ENInstallation / drawing · This model · materialfile.dahuasecurity.comDownload
- ARM9A4-P-W2 DIMENSIONSInstallation / drawing · This model · materialfile.dahuasecurity.comDownload
Series documents can differ from your exact model. Report a wrong or missing file
Questions about this product
How does it connect to the hub?
By 433 MHz radio, up to 1,200 m in open space, or over Ethernet on the existing network.
Can it run on PoE alone?
Yes, from an IEEE 802.3at (PoE+) port or injector. On PoE the auxiliary output for detectors is limited to 1 A in total.
How many detectors can it take?
16 wired inputs with end-of-line resistor wiring, plus 4 relay outputs.
Does it keep working in a power cut?
Yes, with a 12 V 7 Ah battery fitted, which is not included. Static standby is rated at up to 30 hours.
Can it be used outdoors?
No. It is rated for indoor use, IP30, -10 to 50 °C.
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