Skip to product information
1 of 10


EVVR Smart Relay Zigbee 3.0

EVVR Smart Relay Zigbee 3.0

Regular price £21.90
Regular price Sale price £21.90
Sale Sold out
Tax included.

Evvr In-Wall Relay Switch is a No-Neutral Smart Lighting Product for both new-build and retrofitting projects.

Comprised of a smart relay and a smart switch, the smart relay switch supports all kinds of conventional wall switches and can convert any single or multi-bulb setup into intelligent lighting systems. You can control your lights with your conventional wall switches or wirelessly with a voice command with Google Assistant, Alexa or HomeKit Siri, with a tap, or Evvr App.

Smart Relay uses Zigbee wireless technology and may be used in different loads, including incandescent lamps, halogen lamps, LED lamps, and fluorescent lamps. It is small in size and may be installed in the box of light fixtures. This device is compatible with standard Zigbee 3.0 gateway or devices for remote control and inter-operation.

  • Always Connected, Always Online. Unlike other smart relay switches and smart bulbs, the Smart Relay part remains connected even if the wall switch is turned off. You can always access and control your lighting system via apps or voice commands like Google Assistant, Alexa and HomeKit Siri wirelessly.
  • No Neutral Wire Required. No neutral wire required installation opens up more possibilities. Enjoy the convenience of smart lights, and save your money and time without spending a fortune to rewire the electrical wires inside walls and ceilings.
  • Work with All Wall Switches. No need to replace any of your existing wall switches whether it's a modern new home or a classic old house, without affecting the decoration of the house.
  • Exceptionally Small. Divided into two parts, the Smart Switch part of the product is kept exceptionally small as nearly a coin. 2 Smart Switches can fit in any electrical box to support up to a 4-gang switch panel.
  • Make Any Bulbs Smart. It works with all kinds of regular bulbs: incandescent, halogen, fluorescent, and LED bulbs. Convert your whole lighting setup to a smart lighting system without replacing a single bulb no matter what type or shape it is.
  • Hardwired 3-Way or 4-Way. Supports Hardwired 3-Way or 4-Way Control with your existing wall switches, no neutral wire required and easy installation. You can control same light fixture from multiple conventional wall switches.

• Dimension: 59.4 x 39.3 x 21.2 mm

• Input Voltage: AC 85V-240V

• Max. Load power: AC 110V/300W AC 220V/600W

• Operating Temperature : Operating: 0~40°C; Storage: -20~85℃;

• Wireless Connectivity: Zigbee 2.4GHz;

• Range frequency: Zigbee: 2.4GHz

• Range: 30m/indoor,60m/outdoor; Internal antenna

• Weight: 52g


Smart Relay User Manual - Zigbee

View full details

Always Online and Connected, Even If The Wall Switch is Turned Off

Without pairing with the Smart Switch part, the Smart Relay performs as an independent device that adds wireless (Zigbee/Sub-1 GHz Proprietary Protocol) connectivities to your lights and turns regular light bulbs into smart controlled lights. And the Smart Switch is an optional add-on that connects the Smart Relay and your wall switches for expanded functionality: Whether the physical wall switch is on or off, the power is constantly on at the Smart Relay for it to remain always connected and online, thus you can always access and control your connected lights via apps or voice commands like Google Assistant, Alexa, Siri wirelessly.

relay light switch

light relay

Smart Relay Tech Specs

  • Model No.: Zigbee: SRB01;
    Sub-1 GHz | Proprietary Protocol: SRZW01
  • Product Size(L*W*H): 59.4 * 39.3 * 21.2mm
  • Input Voltage: AC 85V~245V
  • Min. Load Power: No limit
  • Max. Load power: AC 110V/300W Resistive load | AC 220V/600W Resistive load
  • Operating Temperature: Operating:0~40°C; | Storage:-20~85℃;
  • Ambient Humidity: 5~85%
  • Wireless Connectivity: Zigbee 2.4GHz; Sub-1 GHz | Proprietary Protocol 865.2MHz to 926.3MHz;
  • Wireless Profile: Zigbee 3.0; Sub-1 GHz
  • RF Characteristics: Zigbee: 2.4GHz | Range: 30m/indoor,
    60m/outdoor; | Internal antenna: Sub-1 GHz | Proprietary Protocol: 865.2MHz to 926.3MHz | Range: 30m/indoor,
  • Compatible load types: Incandescent bulbs | Halogen bulbs | Fluorescent lamps | LED;

Smart Switch Tech Specs

Model Number: SS01

Product Size(L*W*H): 33.5 * 28.2 * 17.3mm

Input Voltage: AC 85V~245V

Min. Load Power: No limit

Max. Load power:

  • AC 110V/300W
  • AC 220V/600W


  • Operating:0~40°C
  • Storage:-20~85℃

Ambient Humidity: 5~85%RH

Supported Switch Type:

  • Toggle
  • Momentary

Supported Loads


Minimum Load Power: No Limit
Maximum Load Power: AC110V 300W / AC220V 600W


Minimum Load Power: No Limit
Maximum Load Power: 600W/220V


Minimum Load Power: No Limit
Maximum Load Power: 600W/220V

Note: The switch is an optional part of the wireless relay, and the maximum load power of the wireless relay is lower when connected with the switch

Frequently Asked Questions

What is the difference between a wall switch and a wireless switch?

The wall switch is a common electrical device that enables people to have control over the electrical current of a circuit. Wall switches make it possible to turn the lights or other appliances on and off, by pressing the physical wall switches or remote control.

A wireless switch uses wireless compatibility to power light fixtures throughout your home. There are more wireless smart switches that can be controlled by APP, smartphone, smart home hub, smart button and more. This eliminates many safety concerns that often come with wall switches, and also makes for a more convenient experience by controlling the lights from the palm of your hand. To install smart wireless switches in a house that doesn’t have a neutral wire, we should either implement a rewiring, or a no-neutral wire-designed smart wireless switch is required.

What are the benefits of a smart switch?

Creating a more digitally inclined living space comes with many benefits. Some of the advantages include:

1.Security. Controlling the lights from anywhere at any time, even when you’re away from home, can provide a sense of safety and security.

2.Saved money. With an eco- and energy-efficient mindset, you can save money with the smart switch by programming when the lights go on and off.

3.Convenience. Don’t leave your bed to get up and turn off the lights. Enjoy the convenience of controlling your lighting with your smart device instead.

Can you wire a smart switch without neutral wire?

Yes! There’s no reason to rewire the electrical wires in your walls when you want to turn your living space into a smart home. A no-neutral wire-required wireless switch takes functionality to the next level by eliminating the need for wiring without compromising on the performance.

What’s the difference between EVVR In-Wall Relay Switch and other no-neutral wire smart switches?

Compared to other no-neutral wire smart switches, EVVR In-Wall Relay Switch is designed without many common limitations:

1. Exceptionally small: With its unique split design, the Smart Switch part of the In-Wall Relay Switch is kept exceptionally small. 2 switches can fit in any electrical boxes to support up to 4-gang panel switches.

2. No neutral wire required: Choosing a no neutral wire required smart light switch, you can automate your light even you don't have a neutral wire installed in your house. Hence a lot of money and time rewiring walls can be saved. In-Wall Relay Switch is such a no neutral wire required smart light switch product.

3. No minimum load requirement: Unlike other no-neutral wire smart light switches, the In-Wall Relay Switch doesn’t have a minimum workload requirement, which eliminates light flickering and electrical leakage problems that might happen when it works with LED light bulbs.

4. Support wide-range switch panels: In-Wall Relay Switch supports three types of light switch panels: momentary push buttons, toggle push buttons, and smart remote buttons.

5.Support different type of light bulbs: In-Wall Relay Switch supports input voltages between AC 85V-240V and different lights: incandescent, halogen, fluorescent, and LED lights.

How to install In-Wall Relay Switch? Guide of installation In-Wall Relay Switch

>> How to install In-Wall Relay Switch

>> How to install In-Wall Relay Switch for 3 way switch

If you would like to view installation videos, please visit and subscribe to ourYouTube channel