Zigbee Relay: Smart Wireless Control for Energy, HVAC and Lighting Systems

Zigbee relays are the intelligent wireless building blocks behind modern energy management, HVAC automation, and smart lighting systems.. Unlike traditional switches, these Zigbee relay switches enable remote control, scheduling, and integration into broader IoT ecosystems—all without the need for rewiring or complex infrastructure. As a leading IoT device manufacturer and ODM provider, OWON designs and produces a full range of Zigbee relay switches that are deployed worldwide in residential, commercial, and industrial applications.

Our products include in-wall switches, DIN rail relays, smart plugs, and modular relay boards—all compatible with Zigbee 3.0 for seamless integration into existing smart home or building management systems. Whether you’re automating lighting, controlling HVAC equipment, monitoring energy usage, or building a custom smart solution, OWON’s Zigbee relays offer reliability, flexibility, and local API access for full system control.

What Is a Zigbee Relay?

A Zigbee relay is a wireless device that uses the Zigbee communication protocol to receive control signals and physically open or close an electrical circuit. It acts as a remotely operated switch for lights, motors, HVAC units, pumps, and other electrical loads. Unlike standard smart switches, a relay can handle higher currents and is widely used in energy management, industrial control, and HVAC automation systems.

At OWON, we manufacture Zigbee relay devices in multiple form factors to support different installation scenarios:

• Zigbee DIN rail relays such as the CB432 for electrical panel integration and circuit-level load control

• Zigbee power meter relays such as the SLC611, which combine relay switching with real-time energy monitoring (voltage, current, power, and kWh)

• Zigbee in-wall relays such as SLC631 and SLC641 for lighting and appliance automation in wall switch boxes

• Smart plugs and sockets (e.g., WSP403–407 series) for plug-and-play device control and energy monitoring

• Modular relay boards for OEM integration into custom equipment and IoT-enabled products

All OWON devices support Zigbee 3.0 and can be paired with Zigbee gateways such as SED-X5 or SED-K3 for local or cloud-based device management.

How Does a Zigbee Relay Work?

Zigbee relays operate within a mesh network, where each device can communicate with nearby nodes to extend range and improve reliability. Once connected to a Zigbee gateway, relay devices can receive commands from mobile apps, automation rules, sensors, or other Zigbee devices. The typical working process includes the following steps:

1. Wireless command received – The Zigbee relay receives a command from a Zigbee gateway, smartphone app, sensor, or another device in the network.

2. Internal relay switching – An internal relay component physically opens or closes the connected electrical circuit to control the load.

3. Status feedback to gateway – The relay reports its operating status (ON/OFF, voltage, current, power consumption) back to the gateway or management platform.

4. Automation trigger – The relay can respond automatically to triggers such as motion detection, temperature thresholds, schedules, or other predefined rules without relying on cloud connectivity.

OWON Zigbee relay devices also include energy monitoring capabilities—such as in models like SES441 and CB432DP—providing real-time measurements of voltage, current, power, and energy consumption. This data is essential for building advanced energy management systems and optimizing electrical loads in smart buildings.

Zigbee Relays for Battery and No-Neutral Installations

Not all wiring scenarios are the same. That’s why OWON offers specialized versions:

• Battery-powered Zigbee relays: Ideal for retrofit projects where wiring access is limited. Devices like our PIR 313 multi-sensor can trigger relay actions based on motion or environmental changes.
• No-neutral wire relays: Designed for older electrical installations without a neutral wire. our Zigbee in-wall relays such as SLC631 and SLC641 operate reliably in two-wire setups, making them perfect for European and North American retrofit applications.

These options ensure compatibility with almost any building infrastructure, reducing installation time and cost.

Zigbee Relay Modules for System Integration

For equipment manufacturers and system integrators, OWON provides Zigbee relay switch modules that can be embedded into third-party products:

• PCB relay modules with Zigbee communication
• Custom firmware development to match your protocol
• API access (MQTT, HTTP, Modbus) for seamless integration into existing platforms

These modules enable traditional equipment—such as solar inverters, HVAC units, or industrial controllers—to become IoT-ready without full redesign.

Why Use a Relay Instead of a Standard Switch?

Relays offer several advantages in smart systems,The table below explains the key differences between a traditional switch and a Zigbee relay used in modern automation systems.

In applications like HVAC control, energy management, and lighting automation, Zigbee relays provide the robustness and intelligence needed for professional-grade smart building systems.

Real-World Applications of Zigbee Relays

OWON’s Zigbee relay switches are deployed in:

• Hotel Room Management: Control lighting, curtains, HVAC, and sockets via a single gateway (SED-X5).
• Residential Heating Systems: Automate boilers, heat pumps, and radiators with TRV 527 and PCT 512 thermostats.
• Energy Monitoring Systems: Use clamp meters (PC 321) and DIN rail relays (CB 432) to track and control circuit-level consumption.
• Smart Offices & Retail Spaces: Combine Zigbee motion sensors (PIR 313) with relays for occupancy-based lighting and HVAC control.

Each solution is backed by OWON’s device-level APIs and gateway software, enabling full local or cloud integration.

FAQ: Zigbee Relays

Q: Do Zigbee relays work without the internet?
A: Yes. OWON’s Zigbee devices operate in a local mesh network. Control and automation can run via a local gateway without cloud access.

Q: Can I integrate OWON relays with third-party systems?
A: Absolutely. We provide MQTT, HTTP, and Modbus APIs for gateway- and device-level integration.

Q: What is the maximum load for your relays?
A: Our DIN rail relays support up to 63A (CB 432), while wall switches typically handle 10A–20A loads.

Q: Do you offer custom relay modules for OEM projects?
A: Yes. OWON specializes in ODM services—we can customize hardware, firmware, and communication protocols to match your requirements.

Q: How do I power a Zigbee switch in a no-neutral setup?
A: Our no-neutral switches use trickle current through the load to power the Zigbee radio, ensuring reliable operation without a neutral wire.

For System Integrators & OEM Partners

If you’re designing a smart building system, integrating energy management, or developing IoT-enabled equipment, OWON’s Zigbee relay switches provide a reliable, scalable foundation. Our products come with:

• Full technical documentation and API access
• Custom firmware and hardware development services
• Private labeling and white-label support
• Global certification (CE, FCC, RoHS)

We work closely with system integrators, equipment manufacturers, and solution providers to deliver tailored devices that fit seamlessly into your projects.

Ready to automate with reliable Zigbee relays?
Contact OWON’s ODM team for technical datasheets, API documentation, or custom project discussions.
Download our full IoT product catalog for detailed specs and application guides.

Related reading:

[Zigbee Remote Controls: The Complete Guide to Types, Integration & Smart Home Control]