SMLIGHT SLZB-06 - Zigbee 3.0 to Ethernet,USB,and WiFi Gateway Coordinator with PoE, Works with Zigbee2MQTT, Home Assistant, ZHA

SMLIGHT SLZB-06/06M/06p7/06MG24 are a network device that serves as a central bridge for managing communication in a Zigbee network. SLZB-06 can also serve a Matter-over-Thread network. The devices are designed specifically for Zigbee2MQTT, Home Assistant and ZHA ensuring smooth work out-of-the-box.
3 modesZigbee-to-Ethernet, Zigbee-to-WiFi and Zigbee-to-USB. Matter-over-ThreadSLZB-06 has also experimental supports of Matter-over-Thread.Different Zigbee SoCs OptionsSLZB-06 on CC2652P, SLZB-06p7 on CC2652P7, SLZB-06P10 on CC2674P10, SLZB-06MG24 on EFR32MG24 and SLZB-06M on EFR32.Plug-and-playPre-flashed and ready to use with Zigbee2MQTT and ZHA.One-click updateZigbee and Core firmware OTA update over web-interfaceESP32 chip2 cores @ 240Mhz + 16Mb memory.Double protectionVPN tunneling with security authorizations. Securely protected login with password to web-interface, internal whitelist firewall settingsMulti-Building Coverage Can cover multiple buildings with 2 or more coordinators and Zigbee2MQTT. You can install as many coordinators to work with Zigbee2MQTT as you want.Support multiple languages15 language localization interfaces.Rich packingZigbee Coordinator, +5dB antenna, screws and screwdriver, adhesive tape, Type-C adapter, manual. CC2652P

CC2652P (48Mhz, 88Kb RAM) is the Top 1 on our list. Reliability has been tested over the years and by many users. CC2652* chips are fully supported in Zigbee2MQTT (EFR32 has an experimental support status), and are also fully supported in ZHA. That is, it is a universal coordinator for both ZHA and Zigbee2MQTT. Zigbee firmware supports up to 200 end devices. Even with the maximum number of Zigbee devices, the chip parameters (processor 48Mhz and 88Kb RAM) are not even close to the maximum, so there is no difference in speed compared to other chips in the series (CC2652P7: 48Mhz+152Kb RAM, CC2674P10: 48Mhz+264Kb RAM). So, CC2652P is #1.
EFR32MG21

The EFR32MG21 (80Mhz + 96Kb RAM) does not differ significantly from the CC2652P chips in terms of technical characteristics. However, there are a few things that the user should know: (1) This chip is ideal for working with ZHA , but it is listed in the experimental section for Zigbee2MQTT. In practice, these chips show more stable operation than CC26** in Zigbee coordinator mode. In addition, although both EFR32MG21 and CC2652P chips have a +20dB amplifier, EFR32 chips usually show higher LQI with end devices. We put this chip on the 1st place along with the CC2652P chip in our rating.
CC2652P7

The CC2652P7 (48Mhz + 152 Kb RAM) has the same processor (48Mhz) as the CC2652P chips, but a slightly larger amount of RAM 152Kb (CC2652P: 88Kb). At the same time, neither the processor nor the memory is used even by 30% when the chip is operating in coordinator mode with the maximum possible number of connected end devices. Therefore, this chip is more of a marketing ploy. Our recommendation is to pay attention to CC2652P. It is cheaper, more reliable (because it has been tested by a large number of users), and supports +20dB of gain at the firmware level. That is, If you like marketing gimmicks, the CC2652P7 is your choice.The CC2652P7 chip is ranked #2 in our rating.
EFR32MG24

TEFR32MG24 (80Mhz + 256KbRAM) does not differ significantly from EFR32MG21 chip in terms of technical characteristics, except for the size of RAM: 256Kb versus 96Kb in EFR32MG21. The amount of RAM is at the level of the CC2674P10 chip. However, as in the case of the CC2674P10 chip, even with the maximum connection, the processor and RAM are not loaded to the maximum in EFR32MG21. So whether it makes sense to overpay for EFR32MG24 is a rhetorical question. Therefore, here we would say the same as with CC2652P7 and CC2674P10 if you like marketing gimmicks, CC2674P10 is your choice. This chip takes the 3rd place in our rating.
CC2674P10

The CC2674P7 (48Mhz + 264Kb RAM) has the same processor (48Mhz)