ARA46-N-W2-868 - The alarm repeater advancedly extends the range of wireless communication between hubs and devices, ensuring maximum coverage and stability thanks to the simultaneous support of Ethernet, Wi-Fi and RF . Equipped with frequency hopping , two-way communication and AES128 encryption , it ensures reliability even in the most complex installations. The built-in 4,750 mAh battery offers up to 35 hours of battery life, while cloud updates and a dual backup system simplify management. It supports up to 128 devices , images and audio data, offering secure and complete integration with the ARC3800H series. Dahua
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ARA46-N-W2-868 | WIRELESS ALARM REPEATER WITH TWO-WAY COMMUNICATION

The Dahua ARA46-N-W2-868 is a professional alarm repeater designed to extend the range of wireless communication between hubs and peripherals, improving the stability, security, and coverage of the entire system. Compatible with the ARC3800H series, it simultaneously uses Ethernet, Wi-Fi, and RF to ensure a reliable connection, supports two-way communication with frequency-hopping algorithms , and integrates a 4,750 mAh battery for long-lasting battery life. Thanks to cloud updates , tamper protection, and intelligent peripheral management, it offers high performance even in complex installations.
Main specifications:
- Ethernet, Wi-Fi and RF support for a robust connection
- Up to 128 devices with two-way communication
- Frequency hopping and AES128 encryption for maximum security
- Up to 35 hours of battery life with built-in 4,750 mAh battery
- Cloud updates and dual backup system
- Wireless range up to 2,000 m in Airfly mode
- Support image and audio data, auto/manual peripheral addition
- Wall or free-standing installation, CE certification
Further details
The device integrates a 10/100 Mbps RJ-45 Ethernet port designed to ensure a stable connection to the security system, supporting up to 128 wireless devices and including a 4,750 mAh internal battery that ensures continuity even in the event of a power outage. This solution allows for reliable integration with the hub via a wired or wireless network, improving device management and system coverage.
✅ Functions :
The repeater offers advanced features such as an LED status indicator, dedicated buttons (reset, power, and AP), low battery detection , tamper protection, and both automatic and manual pairing modes. It also supports cloud updates with a dual backup system, ensuring that any update errors do not affect operation; it also includes the ability to forward images and audio data for complete system integration.
The Wi-Fi module offers compatibility with IEEE 802.11b/g/n/ax standards, expanding connection flexibility together with Ethernet and RF. It operates on the 2.4 GHz band (2400–2483.5 MHz) with transmission power ≤20 dBm, ensuring great stability even in complex environments, as shown in the application diagram on page 2 of the PDF, in which the repeater easily communicates with hubs, sensors and external devices.
✅ Two-way communication :
Two-way communication is optimized through frequency hopping and AES128 encryption, ensuring secure and interference-resistant data exchange. It supports distances of up to 2,000 m in Airfly , 1,600 m in normal RF-HD , and 300 m in high-speed RF-HD , allowing for very wide coverage and rapid response between peripherals and hubs, essential for professional alarm systems.

Technical data sheet
| Model | ARA46-N-W2-868 |
| Port | |
| Wireless Peripheral | 128 wireless peripherals |
| Network Mode | Ethernet and Wi-Fi |
| Network Port | 1 RJ-45, 10Mbps/100Mbps Ethernet port |
| Storage Battery | One built-in 4,750 mah rechargeable lithium battery |
| Function | |
| Indicator Light | 1 indicator for indicating pairing and working status |
| Button | Includes a reset button, power button and AP switch button |
| Remote Update | Cloud update |
| Low Battery Detection | Yes |
| Tamper | Yes |
| Pairing Mode | Auto/Manual |
| Technical | |
| Operating Current | 220 VAC, 100 mA (max) 220 VAC, 8.6 mA (standby) |
| Wireless | |
| Carrier Frequency | Airfly: 865-868.6 MHz RF-HD (normal speed): 865-868 MHz RF-HD (high speed): 2400-2483.5 MHz |
| Transmitter Power (EIRP) | Limit 25 mW |
| Communication Mechanism | Two-way |
| Communication Distance | Airfly:2,000 m (6561.68 ft) RF-HD (normal speed):1,600 m (5249.34 ft) RF-HD (high speed):300 m (984.25 ft) |
| Encryption Mode | AES128 |
| Frequency Hopping | Yes |
| General | |
| Power Supply | 100–240 VAC, 50/60 Hz |
| Standby Time | 35 hours(only connected to the Hub through Airfly and normal speed RH-HD) 18 hours(connected to the Hub through Ethernet, Wi-Fi or high speed RF-HD) |
| Power Consumption | 22 W (max) 1.9 W (standby) |
| Operating Temperature | When battery is not charging: –10 °C to +50 °C (+14 °F to +122 °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 | THERE IS |
| 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 | |
| Standard Wi-Fi | IEEE 802.11b/g/n/ax |
| Wi-Fi Frequency Range | 2400-2483.5 MHz |
| Wi-Fi Power Transmission | ≤20 dBm@2400-2483.5 MHz |


