DHI‑ARM7011‑W2 Wireless Relay Module

The Dahua DHI‑ARM7011‑W2 is a compact wireless relay module designed to integrate seamlessly into modern alarm systems and smart automation setups. Using two-way wireless communication and frequency hopping technology, it ensures stable and interference-resistant connections between devices, making it ideal for indoor security applications.

This module supports AES128 encryption and jamming detection, guaranteeing secure signal transmission, while cloud firmware updates allow for easy maintenance and automatic recovery in case of failed updates. Additional protections include overheating prevention and voltage monitoring, ensuring safe and reliable operation over long periods.

Equipped with 1-channel external tamper input, it provides real-time monitoring against unauthorized access or tampering. The device features a relay output (NO/NC, 0–36 VDC, Max 5 A) capable of controlling low-voltage devices remotely. It also has a test mode for easy system setup and verification.

Its compact PC + ABS casing is lightweight, wall-mountable, and designed for indoor environments with operating temperatures ranging from –10 °C to +55 °C. With a communication range of up to 800 m in open areas, it can cover medium-sized spaces efficiently, making it ideal for alarm systems, access control, and smart home automation.