Smlight SLZB-06 MG24 vs Sonoff Dongle Lite MG21

Updated March 2026

Data from Amazon and official Smlight and Sonoff sites.

2026 verdict

For most buyers in 2026, Smlight SLZB-06 MG24 is the safer pick. It wins the broader comparison through power, connectivity, and antenna gain, while bluetooth proxy helps confirm the result. Sonoff Dongle Lite MG21 remains a niche alternative if price and rating matters more than the rest of the comparison. For most setups, Smlight SLZB-06 MG24 is the smarter buy.

Winner

Smlight

Smlight SLZB-06 MG24

$85.99

BUY NOW

Sonoff

Sonoff Dongle Lite MG21

$19.90

BUY NOW

Feature	Smlight SLZB-06 MG24	Sonoff Dongle Lite MG21	Winner
Price	$85.99	$19.90	Sonoff Dongle Lite MG21
Rating	4.6	4.7	Sonoff Dongle Lite MG21
Power	USB, PoE	USB	Smlight SLZB-06 MG24
Connectivity	USB, Ethernet, 2.4 GHz Wifi	USB	Smlight SLZB-06 MG24
Antenna Gain	+5dBi	+3dBi	Smlight SLZB-06 MG24
Bluetooth Proxy	YES	NO	Smlight SLZB-06 MG24
Zigbee Chip Model	EFR32MG24	EFR32MG21	Different strengths
Amplifier Gain	+20dB	+20 dBm	Different strengths
Warranty	1 year	1 year	Tie
Zigbee Router	YES	YES	Tie
Z-Wave Controller	NO	NO	Tie
Thread Border Router	YES	YES	Tie

Winner

Smlight

Smlight SLZB-06 MG24

$85.99

BUY NOW

+ Power: USB, PoE
+ Connectivity: USB, Ethernet, 2.4 GHz Wifi
+ Antenna Gain: +5dBi
- Price: $85.99 vs $19.90
- Rating: 4.6 vs 4.7

Sonoff

Sonoff Dongle Lite MG21

$19.90

BUY NOW

+ Price: $19.90
+ Rating: 4.7
- Power: USB vs USB, PoE
- Connectivity: USB vs USB, Ethernet, 2.4 GHz Wifi

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB-06 MG24 or Sonoff Dongle Lite MG21?: Smlight SLZB-06 MG24 has the stronger overall profile in this comparison, especially for power, connectivity, and antenna gain.
What is the biggest difference between Smlight SLZB-06 MG24 and Sonoff Dongle Lite MG21?: Price is one of the clearest differences: Smlight SLZB-06 MG24 lists $85.99, while Sonoff Dongle Lite MG21 lists $19.90.
Which one looks better on price?: Smlight SLZB-06 MG24 is listed at $85.99, while Sonoff Dongle Lite MG21 is listed at $19.90. Sonoff Dongle Lite MG21 (better spec).
Who should buy Smlight SLZB-06 MG24?: Choose Smlight SLZB-06 MG24 if your priority is power and connectivity and that matters more than price.
Who should buy Sonoff Dongle Lite MG21?: Choose Sonoff Dongle Lite MG21 if your priority is price and rating and that matters more than power.

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