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Dahua Technology Releases 2025 ESG Report: Advancing Sustainable Development Through Digital Intelligence

2026-04-29

Dahua Technology Releases 2025 ESG Report: Advancing Sustainable Development Through Digital Intelligence

ARC3800H-W2(868)

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ARC3800H-W2(868)

Dahua Wireless Alarm Hub 2

Key Points
    · Supports connecting up to 8 IPCs in the same LAN
    · Supports in-hub pre-recording, so the camera doesn’t need a SD card
    · Supports two-way voice intercom with intercom siren
    · Supports accessing Internet via Ethernet, Wi-Fi
    · Supports connecting up to 150 wireless peripherals, including up to 4 sirens, up to 4 repeaters, up to 8 keypads, up to 8 2.4G PIR-Cams, 56 Sub-G PIR-Cams, up to 64 keyfobs, up to 256 MIFARE One cards (8 cards per keypad user)
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Datasheet

Specifications

Port

Wired Input Expandable 64 channels
Wired Output Expandable 64 channels
Area 32 areas (rooms)
Connected Peripheral 150 peripherals (including wireless and wired devices):
Specifically, up to wireless 64 keyfobs
up to 8 wireless keypads
up to 6 wireless sirens (including 4 intercom sirens)
up to 6 wireless repeaters
up to 64 wireless PIR-Cam (including Indoor PIR
Cameras, Outdoor PIR Cameras, and Triple-tech
Detectors)
up to 16 Multi I/O Transmitters
up to 16 RS-485 Expander modules (including Input
Expander and Output Expander)
Network Mode Ethernet and Wi-Fi
Network Port 1 RJ-45, 10 Mbps/100 Mbps Ethernet port.
Storage Battery One built-in 4,750 mah rechargeable lithium battery.

Video & Audio

Video Input up to 8 onboard IPCs
Audio Output 1 channel
Volume Control Yes
Voice Broadcast Local speaker

Function

Indicator Light The indicator indicates the status of alarms, arming and disarming, the network connection and device failure.
Button Includes a reset button, voltage button and AP switch button.
Video Linkage Yes
Offline Cache Stores up to 50 alarm messages.
Arm and Disarm App, keyboard, remote control, card, scheduled arming and disarming.
Remote Update Cloud update
Low Battery Detection Yes
Tamper Yes
User Management 33 app users (31 general users, 1 admin user and 1 installer) and 32 keypad users
Logs Up to 5, 000 entries
Transmission Protocol SIA, SoftGuard

Technical

Operating Current 220 VAC power supply:
98.2 mA (max)
12.2 mA (standby)
DC3.7V Battery-powered:
1664.9 mA (max)
381.1 mA (standby)

Wireless

Carrier Frequency 868.0–868.6 MHz
Transmitter Power (EIRP) Limit 25 mW
Communication Mechanism Two-way
Communication Distance Up to 2,000 m (6,561.68 ft) in an open space.
Encryption Mode AES128
Frequency Hopping Yes

General

Language Supports 18 languages: Arabic, Czech, Danish, Dutch,
English, French, German, Italian, Portuguese (Europe),
Russian, Spanish (Latin America), Spanish (Europe),
Turkish, Slovak, Polish, Greek, Bulgarian, Estonian.It is set as English by default
Power Supply 100–240 VAC, 50/60 Hz
Standby Time The battery lasts up to 12 hours when it is fully charged and is within the following conditions: It is connected to the Wi-Fi, its ID is connected to the alarm receiving center, the heartbeat interval is 1,800 seconds, and it is connected to 8 peripherals and the cloud.
Power Consumption 220 VAC power supply:
21.6 W (max)
2.7 W (standby)
DC3.7V Battery-powered:
6.2 W (max)
1.41 W (standby)
Operating Temperature When battery is not charging: –10 °C to +55 °C (+14 °F to +131 °F)
When battery is charging : 0 °C to +45 °C (+32°F to +113 °F)
Operating Humidity 10%–90% (RH)
Product Dimensions 174.8 mm × 174.8 mm × 38.3 mm (6.88” × 6.88” × 1.51”) (L × W × H)
Net Weight 510 g (1.12 lb)
Gross Weight 860 g (1.90 lb)
Installation Supports wall mount and desktop mount installation.
Casing Material PC + ABS
Certifications CE
EN 50131-1:2006+A1:2009+A2:2017+A3:2020
EN 50131-3:2009
EN 50131-6:2017+A1:2021
EN 50131-5-3:2017
EN 50131-10: 2014
EN 50136-2: 2013+A1:2023
Security Grade 2
Environmental Class II
ATS category: SP2/DP2
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.
Storage Temperature –10 °C to +55 °C (+14 °F to +131 °F)
Storage Humidity 10%–90% (RH)
Packaging Dimensions 254 mm × 211 mm × 61 mm (10.00” × 8.31” × 2.40”) (L × W × H), standalone in the inner box
524 mm × 508 mm × 442 mm (20.63” × 20.00” × 17.40“) (L × W × H), protective case

Wi-Fi

Wi-Fi Standard IEEE 802.11b/g/n
Wi-Fi Frequency Range 2400-2483.5 MHz
Wi-Fi Power Transmission ≤20 dBm@2400-2483.5 MHz

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