Dahua DHI-ARM310-W2(868) – Wireless Input Expander, 868 MHz, Range up to 1,200 m

The Dahua DHI-ARM310-W2(868) is a wireless input expander that acts as a conversion device – it accepts the signal from an existing wired detector (e.g. PIR, magnetic contact, panic button, smoke detector) via a wired connection and transmits it wirelessly to the Dahua AirShield alarm hub. Operating on the 868 MHz band with a range of up to 1,200 m in open space, the device supports AES128 encryption for secure and stable communication. Configuration is handled entirely through the DMSS app (iOS and Android) with no additional programmer required.

Key features

• Device type: Wireless input expander – converts wired detector signal to wireless for the AirShield system
• Input channel: 1× dry contact input, NC and NO supported (NO by default)
• Alarm types: 6 types – intrusion, medical, fire, emergency, gas, tamper
• Frequency: 868.0–868.6 MHz with frequency hopping mechanism
• Communication range: Up to 1,200 m in open space
• Communication: Two-way, AES128 encryption
• Signal strength detection: Yes – facilitates optimal placement during installation
• Temperature monitoring: Built-in thermometer, accuracy ±1 °C
• Indicator: 1× green LED alarm indicator
• Button: 1× power button
• Tamper protection: Yes – tamper alarm triggered on interference
• Power: 1× CR123A battery (included); battery life approx. 5 years (NO) / approx. 2 years (NC)
• Updates: Cloud-based firmware updates with automatic recovery on failure
• Configuration: DMSS app (iOS and Android)
• Colour: White

The DHI-ARM310-W2(868) is the ideal solution for installers who want to integrate existing wired sensors or specialised detectors (beams, vibration sensors, outdoor detectors) into a modern Dahua AirShield wireless alarm system – without replacing the entire wired installation.