Data from Amazon and official Nabu Casa and Smlight sites.
2026 verdict
Smlight SLZB-MR4 beats Nabu Casa Home Assistant Connect ZWA-2 in 2026, with its clearest edge on rating, power, and connectivity. Its clearest strengths are rating, power, and connectivity, and it still looks stronger on zigbee router and thread border router. Pick Nabu Casa Home Assistant Connect ZWA-2 only when Z-Wave controller is the deciding factor for your setup. That is why Smlight SLZB-MR4 wins the verdict here.
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| Feature | Nabu Casa Home Assistant Connect ZWA-2 | Smlight SLZB-MR4 | Winner |
|---|---|---|---|
| Rating | 4.5 | 5.0 | Smlight SLZB-MR4 |
| Power | USB | USB, PoE | Smlight SLZB-MR4 |
| Connectivity | USB | USB, Ethernet, 2.4 GHz WiFi | Smlight SLZB-MR4 |
| Zigbee Router | NO | YES | Smlight SLZB-MR4 |
| Z-Wave Controller | YES | NO | Nabu Casa Home Assistant Connect ZWA-2 |
| Thread Border Router | NO | YES | Smlight SLZB-MR4 |
| Antenna Gain | +3.38dBi | +5dBi | Smlight SLZB-MR4 |
| Dual Network | NO | YES | Smlight SLZB-MR4 |
| Bluetooth Proxy | NO | YES | Smlight SLZB-MR4 |
| Warranty | 1 year | 1 year | Tie |
| Matter Bridge | NO | NO | Tie |
| Amplifier Gain | +20dB | +20dB | Tie |
$79.00
- + Z-Wave Controller: YES
- - Rating: 4.5 vs 5.0
- - Power: USB vs USB, PoE
Winner
Price unavailable right now
- + Rating: 5.0
- + Power: USB, PoE
- + Connectivity: USB, Ethernet, 2.4 GHz WiFi
- - Z-Wave Controller: NO vs YES
Frequently Asked Questions
Which is better overall: Nabu Casa Home Assistant Connect ZWA-2 or Smlight SLZB-MR4?
Smlight SLZB-MR4 has the stronger overall profile in this comparison, especially for rating, power, and connectivity.
What is the biggest difference between Nabu Casa Home Assistant Connect ZWA-2 and Smlight SLZB-MR4?
Rating is one of the clearest differences: Nabu Casa Home Assistant Connect ZWA-2 lists 4.5, while Smlight SLZB-MR4 lists 5.0.
Who should buy Nabu Casa Home Assistant Connect ZWA-2?
Choose Nabu Casa Home Assistant Connect ZWA-2 if your priority is Z-Wave controller and that matters more than rating.
Who should buy Smlight SLZB-MR4?
Choose Smlight SLZB-MR4 if your priority is rating and power and that matters more than Z-Wave controller.
Full comparison table
Compare all 35 Dongles side by side
You are looking at two of them. The full table lines up all Dongles in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 35 Dongles
- 32 specs compared
- 29 filters
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SmlightSLZB-06 U
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SmlightSLZB-MR3
SmlightSLZB-MR4
SmlightSLZB-MR5U
$119.99
SmlightSLZB-07
$34.99
Nabu CasaHome Assistant Connect ZBT-2
$65.00
SmlightSLZB-MR1U
$102.99
SmlightSLZB-07p7
$36.99
ZoozZ-Wave Long Range Stick
$39.95
SonoffDongle Plus MG24
$35.90
SonoffZBDongle-P
14% OFF$39.99$34.57
SonoffZBDongle-E
8% OFF$26.99$24.90
SonoffDongle-PZG23
$39.90
SmlightSLZB-06M
$72.99
SonoffDongle Plus PP10
$35.90
SmlightSLZB-06p7U
$78.99
SmlightSLZB-MR2
£160.48
SonoffDongle Lite MG21
$24.90
AeotecZ-Stick 7
$39.99
DonglesSmlightSLZB-06 MG24
$82.99
DonglesSmlightSLZB-06 MG26
$84.99- DonglesSmlight
SLZB-06 U
$72.99 
DonglesSmlightSLZB-06
$72.99- DonglesSmlight
SLZB-06M
$72.99 
DonglesSmlightSLZB-06P10
$85.99
DonglesSmlightSLZB-06p7
$79.99- DonglesSmlight
SLZB-06p7U
$78.99 
DonglesSmlightSLZB-07 MG24
$45.99
DonglesSmlightSLZB-07 MG26
- DonglesSmlight
SLZB-07
$34.99 
DonglesSmlightSLZB-07P10
$48.99- DonglesSmlight
SLZB-07p7
$36.99 
DonglesSmlightSLZB-MR1
$103.99- DonglesSmlight
SLZB-MR1U
$102.99 - DonglesSmlight
SLZB-MR2
£160.48 - DonglesSmlight
SLZB-MR3
- DonglesSmlight
SLZB-MR4
- DonglesSmlight
SLZB-MR5U
$119.99 - DonglesSmlight
SLZB-MRW10
$100.00