# DHI‑ARM7011‑W2 Wireless Relay Module

> The Dahua DHI‑ARM7011‑W2 Wireless Relay Module enables reliable remote control of low‑voltage devices using secure two‑way wireless communication. With frequency hopping and AES128 encryption, it ensures stable and secure connections, supports cloud updates, and includes protections against tampering, overheating, and voltage issues — ideal for alarm systems and smart automation setups.

- Price: KSh 3,500 (excluding 16% VAT)
- Availability: In stock
- Brand: Dahua
- Seller: Secom World, Nairobi (+254724037449)
- Updated: 2026-10-29
- URL: https://secomworld.co.ke/product/dahua-dhi-arm7011-w2-wireless-relay-module/

## Specifications
| Feature | Detail |
|---|---|
| Model | DHI‑ARM7011‑W2 |
| Alarm Input | 1 × tamper (NO/NC) |
| Relay Output | 1 × relay (NO/NC, 0–36 VDC, Max 5 A) |
| Wireless Carrier Frequency | 433.1 MHz–434.6 MHz |
| Communication Mechanism | Two‑way |
| Communication Distance | Up to 800 m in open space (868 MHz version may reach ~1,200 m) |
| Encryption | AES128 |
| Power Supply | 7–24 VDC |
| Operating Temp | –10 °C to +55 °C |
| Installation | Wall mount |
| Casing | PC + ABS |
| Product Size | 39 mm × 33 mm × 19 mm |
| Net Weight | 45 g |
| Gross Weight | 60 g |

## Description
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**.