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SMLIGHT SLZB-MR4U - ZigBee/Thread Multiradio gateway CC2674P10 and EFR32MG26 for Home Assistant - Ethernet/PoE/USB
Dual-radio ZigBee and Thread gateway: Ethernet, PoE and Home Assistant.
- CC2674P10 and EFR32MG26 (Thread 1.4) radios work simultaneously
- PoE 802.3af or USB Type-C power
- ZHA, Zigbee2MQTT and Matter over Thread
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Two ZigBee and Thread radios in one gateway
SMLIGHT SLZB-MR4U is a gateway with two radio chips that work at the same time, each on a separate radio channel. One radio handles a ZigBee 3.0 network, and the other a Thread network, which runs Matter devices.
The Texas Instruments CC2674P10 radio has a transmit power of +20 dBm and extended RAM, so it works well as a coordinator for a large ZigBee network. The Silicon Labs EFR32MG26 radio supports Thread 1.4 and has twice as much RAM as the EFR32MG24.
The gateway connects to the network over Ethernet and can be powered by PoE, meaning through the same network cable. This lets you place it in a spot with good coverage, away from the Home Assistant server. USB Type-C power works as an alternative and can operate together with PoE.
SMLIGHT SLZB-MR4U gateway with two antennas
CC2674P10 + MG26
Texas Instruments and Silicon Labs radios
+20 dBm
CC2674P10 radio transmit power
PoE 802.3af
power and network over one cable
ESP32-S3
processor running SLZB-OS
Is it right for you?
A good choice if:
- you want the EFR32MG26 radio with Thread 1.4 support
- you are building a large Home Assistant system with ZigBee and Matter devices
- you prefer a wired Ethernet connection with PoE power
Consider another option if:
- Thread 1.3 is enough for you and you want the variant recommended by the manufacturer: choose SMLIGHT SLZB-MR3U
- you prefer two identical Silicon Labs radios: choose SMLIGHT SLZB-MR5U
Did you know?
Five variants, one enclosure
The SLZB-MRxU series has five variants that differ only in the pair of radio chips. The enclosure, connectors, processor and software are the same in all of them, so you choose a gateway by network type, not by equipment.
Source: SMLIGHT: SLZB-MR4U
Frequently asked questions
Does it work with Home Assistant?
Yes. The gateway works with ZHA, Zigbee2MQTT and the native SMLIGHT integration in Home Assistant.
Does it support Matter?
Yes, over the Thread network. The gateway has a built-in Thread Border Router (OTBR), through which you can add Matter devices.
Do ZigBee and Thread work at the same time?
Yes. Each radio works on a separate channel, so the ZigBee network and the Thread network run simultaneously, without switching modes.
How do I update the gateway?
You can update the firmware of both radios and the processor remotely (OTA) from the SLZB-OS panel, without a programming cable.
Package contents
- 1 x SMLIGHT SLZB-MR4U gateway
- 2 x Swivel antenna, +5 dB
- 1 x Mounting kit: 2 screws and 2 self-adhesive pads
- 1 x 3 mm hex key for tightening the antennas
- 1 x Card with a QR code to the online manual
Technical specification
| Parameter | Value |
|---|---|
| Manufacturer | SMLIGHT |
| Model | SLZB-MR4U |
| Radio 1 | Texas Instruments CC2674P10: ZigBee 3.0, Thread 1.3, +20 dBm |
| Radio 2 | Silicon Labs EFR32MG26: ZigBee 3.0, Thread 1.4, 2 times more RAM than EFR32MG24 |
| Radio operation | simultaneous, on separate channels |
| Protocols | ZigBee 3.0, Thread 1.4, Matter over Thread |
| Antennas | 2 external, swivel, +5 dB |
| Main processor | ESP32-S3, 2 x 240 MHz |
| Ethernet | WIZnet W5500, 10/100 Mb/s, RJ45 socket |
| PoE | IEEE 802.3af, 48 V input, isolated 5 V converter |
| Connectors | RJ45, USB Type-C (5 V power), USB Type-A (USB passthrough) |
| Connectivity | Ethernet, WiFi |
| Software | SLZB-OS: WireGuard, DDNS, OTA updates, OpenThread Border Router; optionally ESPHome |
| Compatibility | Home Assistant (ZHA, Zigbee2MQTT, SMLIGHT integration) |
| Indicators | 6 LEDs, 1 button |
| Dimensions | 160 x 24 x 28 mm |
| Weight | 86 g |
Useful links
| Name | Value |
|---|---|
| Width | 18.2 cm |
| Height | 6 cm |
| Depth | 3 cm |
| Weight | 0.113 kg |
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The full delivery terms are on the page Delivery and payment.
30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
Complaints
If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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