Dahua AirShield Wireless Transmitter ARM9A4-W2

Dahua AirShield ARM9A4-W2 868Mhz

The Dahua AirShield ARM9A4-W2(868) is a powerful bridge designed to integrate legacy wired security components into the modern Dahua wireless ecosystem. By allowing existing wired detectors to trigger wireless alerts through the Alarm Hub, it significantly reduces the cost of system upgrades and modifications. This module supports 16 alarm inputs with multiple EOL configurations and 4 high-capacity relay outputs for local automation or siren control. Built with a focus on reliability, it features frequency hopping to prevent interference and a massive 1,600m open-space RF range. The unit supports AC power with an optional 12V 7Ah backup battery, ensuring continuous protection even during power outages.