Winner
Updated November 2026
Data from the official Smlight and Sonoff sites.
2026 verdict
Smlight SLZB Ultima has the better all-around case than Sonoff ZBDongle-P in 2026, starting with power, connectivity, and Z-Wave controller.
It separates itself most clearly on power, connectivity, and Z-Wave controller, while still looking better on thread border router and dual network. There is still a case for Sonoff ZBDongle-P, but mainly if price, rating, and warranty are what you value most. That is why the final call still favors Smlight SLZB Ultima.
Works with
Connectivity
- Wi-Fi 2.4 GHz
- Ethernet
- Thread border router
- Zigbee coordinator
- Z-Wave
vs
Works with
Connectivity
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| Feature | Smlight SLZB Ultima | Sonoff ZBDongle-P | Winner |
|---|---|---|---|
| Price | $95.99 | $39.99 | Sonoff ZBDongle-P |
| Rating | 2.0 | 4.6 | Sonoff ZBDongle-P |
| Warranty | 1 year | 2 years | Sonoff ZBDongle-P |
| Power | USB, PoE | USB | Smlight SLZB Ultima |
| Connectivity | USB, Ethernet, 2.4 GHz WiFi | USB | Smlight SLZB Ultima |
| Z-Wave Controller | YES | NO | Smlight SLZB Ultima |
| Thread Border Router | YES | NO | Smlight SLZB Ultima |
| Dual Network | YES | NO | Smlight SLZB Ultima |
| Bluetooth Proxy | YES | NO | Smlight SLZB Ultima |
| Zigbee Chip Model | EFR32MGXX / CC26XXPX | CC2652P | Different strengths |
| Zigbee Router | YES | YES | Tie |
| Matter Bridge | NO | NO | Tie |
Winner
$95.99
- + Power: USB, PoE
- + Connectivity: USB, Ethernet, 2.4 GHz WiFi
- + Z-Wave Controller: YES
- - Price: $95.99 vs $39.99
- - Rating: 2.0 vs 4.6
$39.99
- + Price: $39.99
- + Rating: 4.6
- + Warranty: 2 years
- - Power: USB vs USB, PoE
- - Connectivity: USB vs USB, Ethernet, 2.4 GHz WiFi
Frequently Asked Questions
Which is better overall: Smlight SLZB Ultima or Sonoff ZBDongle-P?
Smlight SLZB Ultima has the stronger overall profile in this comparison, especially for power, connectivity, and Z-Wave controller.
What is the biggest difference between Smlight SLZB Ultima and Sonoff ZBDongle-P?
Price is one of the clearest differences: Smlight SLZB Ultima lists $95.99, while Sonoff ZBDongle-P lists $39.99.
Which one looks better on price?
Smlight SLZB Ultima is listed at $95.99, while Sonoff ZBDongle-P is listed at $39.99. Sonoff ZBDongle-P (better spec).
Who should buy Smlight SLZB Ultima?
Choose Smlight SLZB Ultima if your priority is power and connectivity and that matters more than price.
Who should buy Sonoff ZBDongle-P?
Choose Sonoff ZBDongle-P if your priority is price and rating and that matters more than power.
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