Dahua Technology

Dahua Multi IO Transmitter ARM9A4-W2

Rs. 8,480.00

~~Rs. 10,176.00~~ Rs. 8,480.00

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Overview

The Dahua ARM9A4-W2 Wireless Multi IO Transmitter is designed to seamlessly integrate existing wired detectors and sirens into the Dahua AirShield wireless alarm ecosystem. Acting as a bridge between wired security devices and the Alarm Hub, it enables cost-effective upgrades without replacing existing infrastructure.

The transmitter supports 16 wired alarm inputs, 4 relay outputs, and dual auxiliary power outputs, making it ideal for large residential, commercial, and industrial installations. With two-way wireless communication, AES128 encryption, frequency hopping technology, and optional battery backup, the ARM9A4-W2 delivers reliable and secure operation.

Key Features

✔ Supports 16 wired alarm inputs

✔ Supports 4 relay outputs (30 VDC, 3 A)

✔ 2 auxiliary power outputs for wired detectors and sirens

✔ Auxiliary output power up to 24 W

✔ Supports 0EOL, EOL, 2EOL and 3EOL wiring

✔ Pulse detection supported on channels 1 to 6

✔ Optional 12 V / 7 Ah rechargeable backup battery

✔ Two-way wireless communication

✔ AES128 encryption and frequency hopping technology

✔ Tamper protection and low battery detection

✔ Cloud firmware updates with automatic recovery

✔ Communication distance up to 1,200 m in open area

Why Choose Dahua ARM9A4-W2?

Upgrade Existing Wired Systems

The ARM9A4-W2 allows existing wired detectors and sirens to work with Dahua AirShield wireless alarm systems, significantly reducing upgrade costs.

Large Capacity Expansion

With 16 alarm inputs and 4 relay outputs, the module is suitable for large installations requiring multiple wired zones and output controls.

Reliable Wireless Performance

Two-way RF communication combined with AES128 encryption and frequency hopping technology ensures secure and stable signal transmission.

Flexible Power Options

Supports AC power with optional 12 V, 7 Ah backup battery to maintain operation during power failures.

Easy Integration

Compatible with a wide range of wired sensors and sirens, allowing smooth migration to modern wireless alarm systems.

Technical Specifications

Feature	Specification
Product Type	Wireless Multi IO Transmitter
Alarm Inputs	16 Local Alarm Inputs
Pulse Detection	Channels 1–6
Supported Wiring Modes	0EOL, EOL, 2EOL and 3EOL
Maximum Cable Length	500 m
Relay Outputs	4 Outputs (30 VDC, 3 A)
Auxiliary Outputs	2 Outputs, 14.5 V, Total 2 A
Auxiliary Output Power	24 W Maximum
Storage Battery	Optional 12 V, 7 Ah Rechargeable Battery
Indicator Light	1 Status Indicator
Button	1 Switch Button
Remote Upgrade	Cloud Update Supported
Low Battery Detection	Supported
Tamper Protection	Supported
Application Scenario	Indoor
Communication Mechanism	Two-Way Wireless Communication
Encryption Mode	AES128
Frequency Hopping	Supported
Wireless Frequency	433 MHz
Transmission Power (EIRP)	10 mW Maximum
Communication Distance	Up to 1,200 m (Open Area)
Power Supply	100–240 VAC, 50/60 Hz
Standby Time	Up to 30 Hours (With Backup Battery)
Operating Temperature	-10°C to +50°C
Storage Temperature	-10°C to +55°C
Operating Humidity	10%–90% RH
Protection Rating	IP30
Installation	Wall Mount
Casing Material	PC + ABS
Color	White
Dimensions	304 × 235 × 90.8 mm
Net Weight	1.22 kg
Gross Weight	1.78 kg
Certifications	CE