Dahua DHI-ARC3800H-FW2(868) - 4G Wireless Alarm Hub
Product Features
- 4G/3G/2G, Wi-Fi and Ethernet wireless alarm hub with dual-SIM cellular backup
- Supports up to 150 wireless and wired peripherals across 32 areas
- Onboard support for up to 8 IP cameras with in-hub pre-recording (no SD card needed)
- Two-way voice intercom with dedicated intercom sirens
- Built-in 4,750 mAh rechargeable battery for backup power
- SIA and SoftGuard alarm transmission protocols with voice call and SMS alerts
Dahua DHI-ARC3800H-FW2(868) — 4G Wireless Alarm Hub
The Dahua DHI-ARC3800H-FW2(868) is a 4G wireless alarm control hub that acts as the central unit of a Dahua wireless intruder alarm system. It connects to the internet via Ethernet, Wi-Fi or a built-in dual-SIM cellular modem, and manages up to 150 wireless and wired peripherals across 32 separate areas.
Who is it for?
This hub is the brain of a Dahua wireless alarm installation, coordinating keyfobs, keypads, sirens, detectors and PIR cameras from a single control point. It suits installers and end users who need a flexible, cellular-backed alarm hub that keeps monitoring and alerting even if the mains broadband connection goes down, and who also want basic onboard IP camera support for visual verification of alarm events.
Key specification
| Carrier Frequency | 868.0–868.6 MHz |
|---|---|
| Communication Distance | Up to 2,000 m in open space |
| Connected Peripherals | Up to 150 (wired and wireless), including up to 64 keyfobs, 8 keypads, 6 sirens and 64 wireless PIR cameras |
| Areas | 32 areas (rooms) |
| Network Mode | Ethernet, Wi-Fi and cellular (dual SIM, one active at a time) |
| Video Input | Up to 8 onboard IP cameras |
| Storage Battery | Built-in 4,750 mAh rechargeable lithium battery |
| Offline Cache | Stores up to 50 alarm messages |
| Encryption | AES128 with frequency hopping |
| Transmission Protocol | SIA, SoftGuard |
| Power Supply | 100–240 VAC, 50/60 Hz |
| Net Weight | 510 g |
What you will need
- Compatible Dahua wireless alarm peripherals (keyfobs, keypads, sirens, PIR detectors or door/window contacts) to build out the system — these are not included with the hub
- A mains power connection (100–240 VAC); the built-in 4,750 mAh battery provides standby backup if power is interrupted
- A SIM card if cellular connectivity is required (dual SIM slots fitted, one active at a time)
Frequently asked questions
How many wireless peripherals can the DHI-ARC3800H-FW2(868) support?
Up to 150 wired and wireless peripherals across 32 areas, including up to 64 keyfobs, 8 keypads, 6 sirens and 64 wireless PIR cameras.
How does the hub connect to the internet?
Via a 10/100 Mbps Ethernet port, 802.11b/g/n Wi-Fi, or a built-in dual-SIM 4G/3G/2G cellular modem, with only one SIM active at a time.
What happens if mains power fails?
A built-in 4,750 mAh rechargeable lithium battery keeps the hub running, rated for up to 12 hours standby when fully charged and connected to Wi-Fi and 8 peripherals.
Can it monitor cameras as well as alarm sensors?
Yes — the hub accepts up to 8 onboard IP cameras and supports in-hub pre-recording without needing a memory card in the camera, plus video linkage to alarm events.
Browse the full Dahua range, our Intruder alarms category, or Contact us on 01902 902251 to discuss your system at our Wolverhampton trade counter.
| Product Code | DHI-ARC3800H-FW2(868) |
|---|---|
| Manufacturer | Dahua |
| Colour | Brown |
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