Zigbee Switch Module SM308-S — No Neutral, Home Assistant & HomeKit Compatible

(17 customer reviews)

£29.16

Zigbee Switch Module [SM308-S] – SAMOTECH Zigbee 3.0 switch module – 4.3A, no neutral required, auto switch-type detection, fits 86mm box. Pairs with Hue & Home Assistant.

Description

Smart Switch Detection: The SM308-S Zigbee module can now automatically identify the connected light switch type (see the Wiring diagram tab below).

Slim Design: The module is now compact enough to fit into smaller spaces.

Contemporary Protocol: Powered by the up-to-date ZigBee 3.0 protocol, this smart switch ensures streamlined functionality and performance.

Universal Compatibility: Seamlessly integrates with leading platforms like Philips Hue, Homekit, Echo Plus, Hubitat, Homeassistant (ZHA, deConz, Conbee, Raspbee), and many other ZigBee gateways.

Voltage Flexibility: Adapts to a wide voltage range of 100-240VAC for both input and output.

Load Diversity: Efficiently caters to resistive, capacitive, and inductive loads.

Optimal Output: Offers a single channel output with a robust maximum load capacity of 4.3A.

Neutral Wire Optionality: Provides the convenience of wiring with or without the neutral wire.

Versatile Functionality: Features a soft start function and boasts compatibility with multiple switch types, including momentary, toggle, three-way, and more.

Holistic Compatibility: Perfectly harmonizes with Hue and other Zigbee 3.0 systems.

Installation Specifics: Ideally suited for deep wall switch electrical boxes. Bypass serves as an optional extension unit. SM308-S module can operate independently or wired to a light switch if physical lights control is required.

Lighting Mastery: Enables refined control over the ON/OFF state of the connected luminance.

Network Excellence: Acts as a ZigBee router-type device, endorsing Touchlink commissioning. It facilitates direct pairing with a compatible ZigBee remote sans coordinator. Also, it pioneers a self-forming Zigbee network, adding other devices without a coordinator’s need.

 

Supported Zigbee clusters:

Input Zigbee clusters:
0x0000: Basic
0x0003: Identify
0x0004: Groups
0x0005: Scenes
0x0006: On/off
0x0b05: Diagnostics

Customer reviews on Amazon UK
4.3
★★★★★★★★★★
Based on 123 customer reviews on Amazon UK
5 star

64%

4 star

16%

3 star

13%

2 star

3%

1 star

4%

Aggregate review figures sourced from the Amazon UK product listing. We do not republish individual review text or photographs.

Additional information

Weight 30 g
Dimensions 42 × 38 × 16 mm
Brand

Samotech

Frequently Asked Questions

What does the SM308-S Zigbee Switch Module do?

The SM308-S is a single-channel Zigbee 3.0 on/off switch module that installs behind your existing UK light switch. It turns a standard non-smart lighting circuit into a smart one, controllable from any Zigbee 3.0 platform (Philips Hue, Home Assistant, SmartThings, Hubitat, etc.) without replacing the wall switch.

Does the SM308-S require a neutral wire?

No. The SM308-S can be wired with or without a neutral wire — both Live only and Live + Neutral configurations are supported.

What load can the SM308-S handle?

The SM308-S supports up to 4.3A maximum load on a single channel, accepting resistive, capacitive, and inductive loads. LED wattage is rated at 1.7A/CH and halogen at 4.3A/CH.

What types of light switch can I use with the SM308-S?

The SM308-S features automatic switch-type detection. Compatible switch types include momentary (retractive) push, toggle, three-way switches, and more. See the Wiring Diagram tab for the correct connections for your switch type.

Which smart home platforms does the SM308-S work with?

The SM308-S integrates with Philips Hue, HomeKit, Amazon Echo Plus, Hubitat, and Home Assistant (via ZHA, deConz, Conbee, Raspbee), plus other Zigbee 3.0 gateways.

Where does the SM308-S install?

The SM308-S is a slim in-wall Zigbee module designed to fit behind your existing light switch in a standard UK back box. Best suited for deep wall switch electrical boxes; the module measures 42 × 38 × 16 mm.

Can the SM308-S work without a Zigbee coordinator?

The SM308-S is a Zigbee router-type device with Touchlink commissioning support — it can pair directly with a compatible Zigbee remote without a coordinator and can form a Zigbee network independently. For full smart home integration (apps, automations, voice control), a Zigbee coordinator or hub is recommended.

What is the SM308-S Soft Start function?

The SM308-S includes a soft start function that gradually energises the connected load on switch-on, reducing inrush current and helping protect bulbs and LEDs from sudden switching stress.

Manual

SAMOTECH Zigbee Switch SM308-S Manual – V1

SAMOTECH Zigbee Switch SM308-S-V2 Manual – V2

Specifications

Zigbee Switch Module

Wiring Diagram

17 reviews for Zigbee Switch Module SM308-S — No Neutral, Home Assistant & HomeKit Compatible

4.9
Based on 17 reviews
5 star
88
88%
4 star
11
11%
3 star
0%
2 star
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1 star
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1-10 of 17 reviews
  1. Works perfectly!

    (0) (0)
  2. (0) (0)
  3. Fantastic no-neutral Zigbee switch. Three things put it head and shoulders above anything else; the near-instant responsiveness, the external antennna which can be placed outside of metal back-boxes, and the reliability. I have never had one of these drop their mesh connection, unlike many others I have tried. These are the only ones I’ll buy now and I’m very glad they came back into stock with the same high quality.

    (0) (0)
  4. Solid device and works well with no issues, went straight in the wall and connected to Hue immediately!

    (0) (0)
  5. (0) (0)
  6. Very easy and quick. More choice than buying via Amazon. Great product for Philips Hue/Apple Homekit compatibility

    (0) (0)
  7. Please don’t ever stop selling or making these units. They are by far the best dimming and smart units I have ever had the pleasure to work with. I have work with big brands like L**ron, and many different single stand alone dimmers and nothing works as smooth and trouble free as these. Have installed probably near 100. Such great features available.

    (0) (0)
  8. I have not had a chance to really use the ZigBee aspect of the module yet, but the build quality is good and the device works well with a retractive switch.

    (0) (0)
  9. Particularly useful when there’s no neutral available.

    (0) (0)
  10. (0) (0)
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