Data from Amazon and official Nabu Casa and Smlight sites.
2026 verdict
Looking at the full picture in 2026, Smlight SLZB-MR3 gets the edge. What pushes it ahead is power, connectivity, and zigbee router, and amplifier gain and antenna gain keeps the advantage from looking narrow. Nabu Casa Home Assistant Connect ZBT-2 remains a niche alternative if price matters more than the rest of the comparison. For most setups, Smlight SLZB-MR3 is the smarter buy.
| Feature | Nabu Casa Home Assistant Connect ZBT-2 | Smlight SLZB-MR3 | Winner |
|---|---|---|---|
| Price | $65.00 | $105.99 | Nabu Casa Home Assistant Connect ZBT-2 |
| Power | USB | USB, PoE | Smlight SLZB-MR3 |
| Connectivity | USB | USB, Ethernet, 2.4 GHz Wifi | Smlight SLZB-MR3 |
| Zigbee Router | NO | YES | Smlight SLZB-MR3 |
| Amplifier Gain | 10 dBm | +20dB | Smlight SLZB-MR3 |
| Antenna Gain | +4.16dBi | +5dBi | Smlight SLZB-MR3 |
| Dual Network | NO | YES | Smlight SLZB-MR3 |
| Bluetooth Proxy | NO | YES | Smlight SLZB-MR3 |
| Zigbee Chip Model | EFR32MG24 | EFR32MG24 / CC2674P10 | Different strengths |
| Rating | 4.7 | 4.7 | Tie |
| Warranty | 1 year | 1 year | Tie |
| Z-Wave Controller | NO | NO | Tie |
$65.00
- + Price: $65.00
- - Power: USB vs USB, PoE
- - Connectivity: USB vs USB, Ethernet, 2.4 GHz Wifi
Winner
$105.99
- + Power: USB, PoE
- + Connectivity: USB, Ethernet, 2.4 GHz Wifi
- + Zigbee Router: YES
- - Price: $105.99 vs $65.00
Frequently Asked Questions (FAQ)
- Which is better overall: Nabu Casa Home Assistant Connect ZBT-2 or Smlight SLZB-MR3?
- Smlight SLZB-MR3 has the stronger overall profile in this comparison, especially for power, connectivity, and zigbee router.
- What is the biggest difference between Nabu Casa Home Assistant Connect ZBT-2 and Smlight SLZB-MR3?
- Price is one of the clearest differences: Nabu Casa Home Assistant Connect ZBT-2 lists $65.00, while Smlight SLZB-MR3 lists $105.99.
- Which one looks better on price?
- Nabu Casa Home Assistant Connect ZBT-2 is listed at $65.00, while Smlight SLZB-MR3 is listed at $105.99. Nabu Casa Home Assistant Connect ZBT-2 (better spec).
- Who should buy Nabu Casa Home Assistant Connect ZBT-2?
- Choose Nabu Casa Home Assistant Connect ZBT-2 if your priority is price and that matters more than power.
- Who should buy Smlight SLZB-MR3?
- Choose Smlight SLZB-MR3 if your priority is power and connectivity and that matters more than price.
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