The DHI-ARC3800H-FW2 is a wireless alarm hub designed to manage and coordinate multiple wireless alarm peripherals, keeping you informed when security events occur. It supports alarms for break-ins, fire, water leaks, and glass breakage, sending real-time notifications and video clips via integrated IPC cameras. With multi-network redundancy and cloud-based updates, it ensures continuous, reliable protection for homes and small businesses.
Key Features
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Supports 150 Wireless Peripherals – Manage door sensors, PIR cameras, keyfobs, keypads, sirens, and repeaters with extensive coverage.
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Multi-Network Redundancy – Ethernet, Wi-Fi, and 4G backup networks maintain stable connectivity.
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8-Channel Video Input – Integrates IPC cameras for alarm video verification and quick remote scene checks.
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Two-Way Encrypted Communication – AES128 encryption with frequency hopping ensures secure, interference-free signals.
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Built-in Rechargeable Battery – 4,750 mAh battery offers up to 12 hours of backup during power outages.
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Multi-User Management – Supports 33 app users and 32 keypad users with detailed event logs (up to 5,000 entries).
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Cloud-Based Firmware Updates – Allows remote device and peripheral updates with auto-recovery on failures.
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Supports Voice Broadcast & SMS Alerts – Sends notifications and alarm calls to up to 5 phone numbers with multi-language SMS support.
Perfect For:
- Residential homes needing comprehensive wireless alarm coverage
- Small shops and boutiques without extensive wiring
- Apartments and condominiums requiring scalable security
- Offices wanting video-verified intrusion alerts
- Remote or secondary buildings requiring network redundancy
- Installers seeking easy integration with Dahua IPC cameras
Install Tips
- Mount the hub in a central location with strong Wi-Fi or Ethernet signal.
- Avoid metal enclosures that can block wireless signals.
- Use dual SIM cards from different carriers for reliable 4G backup.
- Ensure good ventilation to prevent overheating, especially when charging.
- Regularly test peripheral connectivity and battery status via the app.
- Place the hub away from strong electromagnetic interference sources.
Downloads
Quick-Read Specs Card
| Feature |
Specification |
| Wireless Zones |
Up to 150 wireless peripherals (6 sirens, 64 PIR cams) |
| Network Modes |
Ethernet, Wi-Fi 2.4 GHz, Dual SIM 4G (one active SIM) |
| Video Input |
8-channel IPC video upload for alarms |
| Communication |
Two-way AES128 encrypted, frequency hopping |
| Wireless Frequency |
433.1–434.6 MHz |
| Communication Range |
Up to 1,400 m (4593 ft) open space |
| Battery |
4,750 mAh rechargeable lithium, up to 12 hr backup |
| User Management |
33 app users, 32 keypad users |
| Alarm Notifications |
SMS & voice call (up to 5 numbers) |
| Power Supply |
100–240 VAC, 50/60 Hz |
| Operating Temperature |
–10 °C to +55 °C (battery off charging) |
| Dimensions (WxHxD) |
174.8 × 174.8 × 38.3 mm (6.88" × 6.88" × 1.51") |
| Weight |
510 g (1.12 lb) |
| Mounting |
Wall or desktop mount |
Extra Info
Multi-Network Redundancy
The hub can seamlessly switch between Ethernet, Wi-Fi, and 4G cellular networks to maintain continuous alarm communication even if one network fails. Dual SIM cards provide carrier diversity for cellular backup.
Video Alarm Verification
When an alarm triggers, integrated IPC cameras upload recorded video clips to the app, letting you verify incidents visually without physically checking the site.
Secure Wireless Communication
Two-way communication between the hub and wireless devices uses AES128 encryption and frequency hopping to avoid interference and eavesdropping.
Cloud Update & Auto Recovery
Firmware can be updated remotely via cloud service with a dual backup system to restore devices automatically if an update fails, minimizing downtime.
Multi-User & Access Management
Supports up to 33 app users (with admin and installer roles) and 32 keypad users, providing flexible access control and comprehensive event logging for audit trails.
Voice & SMS Notifications
The hub supports multilingual SMS alerts and can send voice alarm calls to multiple phone numbers, ensuring immediate awareness of security events.
Q&A
Q: Can I use both SIM cards at the same time?
A: No, only one SIM card can be active at a time, but you can switch manually or automatically for network reliability.
Q: How long does the battery last during power outages?
A: The rechargeable battery provides up to 12 hours of backup under typical usage conditions.
Q: How many wireless devices can I connect?
A: Up to 150 wireless peripherals, including sensors, cameras, keyfobs, keypads, sirens, and repeaters.
Q: Does the hub work with cameras from other brands?
A: It’s designed primarily for Dahua IPC cameras to enable video alarm verification.
Q: Can I control the alarm via smartphone?
A: Yes, the system supports remote arm/disarm and monitoring through Dahua’s DMSS or DoLynk Care apps.
Q: What languages are supported for notifications?
A: SMS supports English, Spanish, French, Italian, Arabic, Turkish, and Danish. Voice alarms support English.
Q: How much space is needed for installation?
A: The hub is compact and can be mounted on a wall or placed on a desktop, requiring minimal space.
Q: How secure is the wireless communication?
A: Wireless communication uses AES128 encryption and frequency hopping to protect against interference and hacking.
