SMLIGHT SLZB-07 – A low-cost, compact Zigbee 3.0 USB adapter

SMLIGHT SLZB-07 is a low-cost, compact Zigbee 3.0 USB adapter based on Silicon Labs EFR32 microcontroller and CP2102 USB to serial chip designed to work with multi-vendor software systems such as Zigbee2MQTT and Home Assistant ZHA.

The adapter lets you easily integrate any Zigbee devices into Smart Home automation systems such as Home Assistant, OpenHub, or HomeSeer and offers an alternative to products like the official SkyConnect USB stick and SONOFF ZBDongle-E. It’s also Thread and Matter ready.

SMLIGHT SLZB-07 Zigbee 3.0 USB Adapter

SMLIGHT SLZB-07 specifications:

  • Wireless SoC – Silicon Labs EFR32MG21 Arm Cortex-M33 microcontroller @ 80 MHz with 352KB flash, 1024KB ROM for protocols and library functions,  96KB SRAM, integrated power amplifier, Bluetooth 5.2 Low Energy and 802.15.4 radios (Zigbee and Thread)
  • Connectivity
    • Zigbee 3.0 support, including Zigbee Green Power.
    • Thread/Matter ready
    • +3dB SMA antenna included
  • USB – USB Type-A port for data and power
  • Power Supply
    • Input – 5V/60mA via USB-A
    • Overvoltage protection
  • Dimensions – 60 x 18 x 10 mm (with USB and antenna plugs); antenna size: 110 x 9 x 9mm
  • Certifications – CE and FCC
Zigbee USB adapter not blocking other USB ports
The SML-07 is smaller than some competing products on the market and does not block other USB ports on host devices such as the Raspberry Pi.

The SLZB-07 adapter comes preloaded with the EmberZNet firmware and is ready to use, and ships with a 3dB antenna, and a QR code on the package redirected to the user manual.

Besides its compact & thin design and relatively low price, SMLIGHT also highlights the CP2102 enables up to 921 Kbps serial connection, and the USB adapter board is made of a 4-layer PCB that prevents interference between the RF dongle and the host.  It’s also working with the company’s SLZB-06 Zigbee Ethernet (PoE) adapter.


The SkyConnect USB stick is actually shorter and thinner than the SLZB-07 with the same width, but it was not included in the comparison above because of the higher price ($30).

SMLIGHT SLZB-07 is sold on the company’s web store for a promotional price of 9.98$ plus shipping, and once the promotion is over, the device will go for $14.99. The latter price still compares well to the $19.90 asked for the SONOFF ZBDongle-E, although it’s usually possible to get free shipping for orders over $89 and there are some coupon codes such as CNXSOFTSONOFF. More details about the SMLIGHT SLZB-07 Zigbee USB 3.0 adapter can be found on the product page.

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