Smlight SLZB-07 vs Sonoff Dongle Lite MG21

Updated March 2026

Data from Amazon and official Smlight and Sonoff sites.

2026 verdict

For most buyers in 2026, Sonoff Dongle Lite MG21 is the safer pick. What pushes it ahead is price, and its broader overall balance keeps the advantage from looking narrow. Smlight SLZB-07 still makes sense if rating is your priority, but most buyers should still lean toward Sonoff Dongle Lite MG21. That is why the final call still favors Sonoff Dongle Lite MG21.

Smlight

Smlight SLZB-07

$34.99

BUY NOW

Winner

Sonoff

Sonoff Dongle Lite MG21

$19.90

BUY NOW

Feature	Smlight SLZB-07	Sonoff Dongle Lite MG21	Winner
Price	$34.99	$19.90	Sonoff Dongle Lite MG21
Rating	4.8	4.7	Smlight SLZB-07
Amplifier Gain	+20dB	+20 dBm	Different strengths
Antenna Gain	+3dB	+3dBi	Different strengths
Warranty	1 year	1 year	Tie
Power	USB	USB	Tie
Connectivity	USB	USB	Tie
Zigbee Chip Model	EFR32MG21	EFR32MG21	Tie
Zigbee Router	YES	YES	Tie
Z-Wave Controller	NO	NO	Tie
Thread Border Router	YES	YES	Tie
Matter Bridge	NO	NO	Tie

Smlight

Smlight SLZB-07

$34.99

BUY NOW

+ Rating: 4.8
- Price: $34.99 vs $19.90

Winner

Sonoff

Sonoff Dongle Lite MG21

$19.90

BUY NOW

+ Price: $19.90
- Rating: 4.7 vs 4.8

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB-07 or Sonoff Dongle Lite MG21?: Sonoff Dongle Lite MG21 has the stronger overall profile in this comparison, especially for price.
What is the biggest difference between Smlight SLZB-07 and Sonoff Dongle Lite MG21?: Price is one of the clearest differences: Smlight SLZB-07 lists $34.99, while Sonoff Dongle Lite MG21 lists $19.90.
Which one looks better on price?: Smlight SLZB-07 is listed at $34.99, while Sonoff Dongle Lite MG21 is listed at $19.90. Sonoff Dongle Lite MG21 (better spec).
Who should buy Smlight SLZB-07?: Choose Smlight SLZB-07 if your priority is rating and that matters more than price.
Who should buy Sonoff Dongle Lite MG21?: Choose Sonoff Dongle Lite MG21 if your priority is price and that matters more than rating.

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