Name: Dahua Wireless Alarm Hub 2
Brand: Dahua
SKU: ARC3800H-FW2

A wireless alarm hub that verifies alarms with video and announces them by voice.

This alarm hub brings wireless detectors, sirens and IP cameras together at one point. It runs redundantly across Ethernet, Wi-Fi and the cellular network, and uploads camera footage to the mobile app the moment an alarm triggers. It draws mains power and falls back to the built-in rechargeable battery during an outage.

150 channelsWireless peripheral capacity

433.1–434.6 MHzCarrier frequency

AES128Wireless encryption

10/100 MbpsEthernet port

100–240 V ACPower supply

12 hoursBattery standby time

Key features

150channels

Large peripheral capacity

Connects sirens, PIR cameras, keyfobs, keypads and repeaters to the same hub.

433.1–434.6MHz

Frequency hopping wireless band

It talks to peripherals two ways and changes band in noisy environments.

8channels

Alarm verification with IP cameras

It uploads IP camera footage to the mobile app the moment an alarm triggers.

1400m

Communication distance in open space

It reaches peripherals up to this distance in an open space.

4750mAh

Built-in rechargeable battery

It runs the hub for up to 12 hours on a full charge when mains power drops.

33users

App user management

31 general users, 1 admin and 1 installer work with separate rights.

IN DAILY USE

Arming and disarmingThe app, a keypad, a remote control, a card and a schedule arm and disarm the system.

Voice broadcastThe telephone line and the local speaker announce the alarm status out loud.

Cloud updatesA cloud update refreshes the hub and the wireless peripherals, and the dual backup restores the previous version if an update fails.

While charging, the operating temperature range narrows to 0 °C – +45 °C.

Technical Specifications – Dahua Wireless Alarm Hub 2

Wireless Zones

150 channels of wireless peripherals (6 sirens, 64 PIR cameras (only 8 indoor PIR cameras), 64 keyfobs, 8 keypads, 4 repeaters)

Network Mode

Ethernet, Wi-Fi, Cellular (Dual SIM supported, single active)

Network Port

1 × RJ-45, 10/100 Mbps Ethernet

Storage Battery

Built-in 4750 mAh rechargeable lithium battery

Video Input

8-channel IPC (alarm video upload only)

Audio Output

1 channel

Voice Broadcast

Telephone and local speaker

Indicator Light

Alarm, arm/disarm, network status, device fault indication

SMS / Phone Call

Yes (up to 5 phone numbers each)

Arm / Disarm

App, keypad, remote control, card, scheduled

User Management

33 app users (31 normal, 1 admin, 1 installer), 32 keypad users

Logs

Up to 5,000 records

Wireless Frequency

433.1 – 434.6 MHz

Transmitter Power

≤10 mW EIRP

Encryption

AES128

Communication Distance

Up to 1400 m (open area)

Power Supply

100–240 VAC, 50/60 Hz

Standby Time

Up to 12 hours when fully charged

Operating Temperature

-10 °C to +55 °C (Charging: 0 °C to +45 °C)

Operating Humidity

10% – 90% RH

Dimensions

174.8 × 174.8 × 38.3 mm

Net Weight

510 g

Certifications

A wireless alarm hub that verifies alarms with video and announces them by voice.

150 channelsWireless peripheral capacity

433.1–434.6 MHzCarrier frequency

AES128Wireless encryption

10/100 MbpsEthernet port

100–240 V ACPower supply

12 hoursBattery standby time

Key features

150channels

Large peripheral capacity

Connects sirens, PIR cameras, keyfobs, keypads and repeaters to the same hub.

433.1–434.6MHz

Frequency hopping wireless band

It talks to peripherals two ways and changes band in noisy environments.

8channels

Alarm verification with IP cameras

It uploads IP camera footage to the mobile app the moment an alarm triggers.

1400m

Communication distance in open space

It reaches peripherals up to this distance in an open space.

4750mAh

Built-in rechargeable battery

It runs the hub for up to 12 hours on a full charge when mains power drops.

33users

App user management

31 general users, 1 admin and 1 installer work with separate rights.

IN DAILY USE

Arming and disarmingThe app, a keypad, a remote control, a card and a schedule arm and disarm the system.

Voice broadcastThe telephone line and the local speaker announce the alarm status out loud.

Cloud updatesA cloud update refreshes the hub and the wireless peripherals, and the dual backup restores the previous version if an update fails.

While charging, the operating temperature range narrows to 0 °C – +45 °C.

Technical Specifications – Dahua Wireless Alarm Hub 2

Wireless Zones

150 channels of wireless peripherals (6 sirens, 64 PIR cameras (only 8 indoor PIR cameras), 64 keyfobs, 8 keypads, 4 repeaters)

Network Mode

Ethernet, Wi-Fi, Cellular (Dual SIM supported, single active)

Network Port

1 × RJ-45, 10/100 Mbps Ethernet

Storage Battery

Built-in 4750 mAh rechargeable lithium battery

Video Input

8-channel IPC (alarm video upload only)

Audio Output

1 channel

Voice Broadcast

Telephone and local speaker

Indicator Light

Alarm, arm/disarm, network status, device fault indication

SMS / Phone Call

Yes (up to 5 phone numbers each)

Arm / Disarm

App, keypad, remote control, card, scheduled

User Management

33 app users (31 normal, 1 admin, 1 installer), 32 keypad users

Logs

Up to 5,000 records

Wireless Frequency

433.1 – 434.6 MHz

Transmitter Power

≤10 mW EIRP

Encryption

AES128

Communication Distance

Up to 1400 m (open area)

Power Supply

100–240 VAC, 50/60 Hz

Standby Time

Up to 12 hours when fully charged

Operating Temperature

-10 °C to +55 °C (Charging: 0 °C to +45 °C)

Operating Humidity

10% – 90% RH

Dimensions

174.8 × 174.8 × 38.3 mm

Net Weight

510 g

Certifications

Dahua Wireless Alarm Hub 2

Datasheet

ARC3800H-FW2

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