how many connections can this handle?

The ZBDongle-E can directly connect up to 32 sub-devices, and a single route can expand 32 sub-devices. There is no limit on the total number of firmware ends, depending on the platform you are using.

Hola es posisble conectarse con varios antenas o varios moviles ?

Funciona de coordinador zigbee y se conecta a los dispositivos de este tipo y a otros hubs zigbee de tu red. Debe estar conectado a un PC para gestionar los dispositivos.

is there a commitment that this is upgradeable to support the thread standard

That I do not know. Minus my Google Home Speakers, I don't have any THREAD devices and don't have any immediate or even potentially immediate plans/goals/interest to make the switch. Sorry that I can't be more help. - Chris

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SONOFF ZBdongle-E, Universal Zigbee USB Gateway with Antenna, Works with Alexa & Google Home, IoBroker, Wireless Zigbee 3.0 USB Adapter(1 Pack)

Product ID: 462558426

Details

Brand
SONOFF
Colour
Black
Compatible devices
Desktop
Item dimensions L x W x H
9 x 3 x 2
Item weight
20 Grams

📶20dBm output gain for strong signal

🔌Plug & play USB Zigbee coordinator

🛡️Aluminum housing reduces interference

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15.95 OMR

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Description

🚀 Elevate your smart home game with the ultimate Zigbee USB gateway!

UNIVERSAL COMPATIBILITY - Works effortlessly with Alexa, Google Home, and popular IoT platforms to future-proof your smart home.
POWERFUL SIGNAL STRENGTH - Built on EFR32MG21 chipset with 20dBm output gain ensures reliable, far-reaching Zigbee connectivity.
COMPACT LIGHTWEIGHT DESIGN - Sleek 7.5 x 2.55 x 1.35 cm dongle fits discreetly on any USB port without bulk.
INTERFERENCE FREE PERFORMANCE - Durable aluminum casing minimizes signal noise from other devices, keeping your network stable.
SEAMLESS SMART HOME INTEGRATION - Pre-flashed with Zigbee coordinator firmware for instant setup with Home Assistant, openHAB, Zigbee2MQTT and more.

The SONOFF Zigbee 3.0 USB Dongle Plus-E is a compact, pre-flashed universal Zigbee coordinator featuring a powerful EFR32MG21 chipset with 20dBm output gain and an aluminum housing that reduces interference. Compatible with major smart home platforms like Home Assistant, Alexa, and Google Home, it offers plug-and-play convenience and reliable wireless connectivity for seamless smart home automation.

Specifications

ASIN	B0B6P22YJC
Best Sellers Rank	#9,752 in Computers ( See Top 100 in Computers ) #82 in USB Computer Network Adapters
Brand	SONOFF
Built-In Media	ZBDongle-E
Color	Black
Compatible Devices	Desktop
Customer Reviews	4.7 4.7 out of 5 stars (3,484)
External Testing Certification	Não aplicável
Item Dimensions	9 x 3 x 2 centimeters
Item Type Name	ZBDongle-E Zigbee 3.0 USB Dongle
Item Weight	20 Grams
Manufacturer	SONOFF
Mfr Part Number	ZBDongle-E
Model Number	ZBDongle-E 1 Pack
Number of Items	1
Package Quantity	1
Power Plug Type	No Plug
Smart Home Compatibility	Smart Home Compatible
Unit Count	1.0 Count
Warranty Description	1

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