At a glance
- Operating Temperature
- 10 °C to +50 °C
- Installation
- Wall mount
- Protection
- IP30
- Carrier Frequency
- 433 MHz
- Communication Distance
- Up to 1,200 m (3937.0 ft) in an open space
- Storage Battery
- Yes (12 V
Model ARM9A4-W2Dahua ARM9A4-W2 Wireless Multi-I/O Transmitter
₹11,122 Incl. GST
₹9,425 + 18% GST
At a glance
- Operating Temperature
- 10 °C to +50 °C
- Installation
- Wall mount
- Protection
- IP30
- Carrier Frequency
- 433 MHz
- Communication Distance
- Up to 1,200 m (3937.0 ft) in an open space
- Storage Battery
- Yes (12 V
Wall box that connects a group of up to 16 wired detectors, for example in a separate building or warehouse section, to a Dahua wireless alarm by radio. 4 relay outputs, mains powered, takes a 12 V 7 Ah backup 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-W2 is a wireless multi input and output transmitter: a wall-mounted box with terminals for 16 wired detectors and 4 relay outputs that reports to a Dahua wireless alarm hub over two-way 433 MHz radio. It brings a whole group of wired sensors, such as door contacts, passive infrared (PIR) detectors, beams and panic buttons, into a wireless alarm. That suits a remote building, a warehouse section or an older wired installation being moved onto a wireless hub.
Is it right for you?
- It suits a cluster of wired detectors that sit together, far from the hub, in a Dahua 433 MHz wireless alarm.
- Each ARC3000H hub supports up to 4 multi-I/O transmitters.
- If the radio path to the hub is unreliable and you have a network cable at that location, the ARM9A4-P-W2 adds Ethernet and Power over Ethernet (PoE).
- Indoor use only, IP30, -10 to 50 °C.
Key features
- 16 wired alarm inputs; inputs 1 to 6 also support pulse detection.
- Every input supports 0EOL, EOL, 2EOL and 3EOL (end-of-line resistor) wiring, with detector cable runs up to 500 m.
- 4 relay outputs rated up to 30 V DC, 3 A, for sirens, strobes or other equipment.
- 2 auxiliary 14.5 V outputs, 2 A in total, to power the wired detectors and sirens.
- Up to 1,200 m open-space radio range with frequency hopping and AES128 (Advanced Encryption Standard) encryption.
- Mains powered at 100 to 240 V AC, with a slot for a 12 V, 7 Ah backup battery and up to 30 hours of static standby.
- Tamper, low battery detection and cloud updates.
What else you need
A Dahua 433 MHz wireless hub, such as the ARC3000H, a mains supply, a 12 V 7 Ah backup battery, which is not included, and end-of-line resistors to match the wiring mode of each zone.
Installation
An alarm installer should fit it. The box is wall mounted indoors, wired to mains, the backup battery and the detector and output cables, with each zone terminated in the chosen end-of-line mode, then paired with the hub.
Software and licences
Zones, outputs and pairing are configured through the hub. Firmware updates arrive through the cloud.
Before you buy
- The 12 V 7 Ah backup battery is not included; budget for it and for end-of-line resistors.
- Up to 4 multi-I/O transmitters per ARC3000H hub.
- 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-W2
- How is it powered?
- 100 to 240 V AC, 50/60 Hz
- 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-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 2.2，no strong electricity signal interference)
- Alarm Output
- Supports 4 local channels(Max 30 V DC, 3 A)
- 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 2 A
- Indicator Light
- One indicator (indicator status)
- Button
- 1 × switch 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
- Low Battery Threshold
- 11,000 mV
- Battery Restore Threshold
- 12,000 mV
- 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
- Power Consumption
- 220 V AC quiescent current (40 mA Irms) 220 V AC max current@2Aload + charge (315 mA Irms)
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 |
| Radio Frequency | 433 MHz |
Downloads
Documentation
- ARM9A4-W2 datasheet 20251202Datasheet · This model · materialfile.dahuasecurity.comDownload
- Dahua ARM9A4-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-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 many wired detectors can it take?
16 wired inputs, and all of them support end-of-line resistor wiring. Inputs 1 to 6 also support pulse detection.
Does it power the detectors?
Yes. Two auxiliary 14.5 V outputs give 2 A in total for detectors and sirens.
Does it keep working in a power cut?
Yes, with a 12 V 7 Ah battery fitted. The battery is not included. Dahua rates static standby at up to 30 hours.
How far can the detectors be from the box?
Detector cable runs can be up to 500 m.
How far can the box be from the hub?
Up to 1,200 m in open space by radio. For a wired network link, choose the ARM9A4-P-W2.
Ask about this modelSetup, compatibility, what is in the box
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