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- S7+ vs A9s
Roborock S7+ vs ZACO A9s
What S7+ does better (2) and where A9s wins (2) — every spec side by side.
Why is S7+ better than A9s?
- NavigationLaser (LiDAR) vs Camera (vSLAM)
- Base stationAuto-empty dock vs Charging dock
Why is A9s better than S7+?
- Charging time300 min vs 180 min+67%
- Dustbin (robot)450 ml vs 600 ml+33%
Specifications
Side by side
| Suction & cleaning | ||
| Dustbin (robot) | 450 ml | 600 ml |
| Side brushes | 1 | — |
| HEPA filter | Yes | — |
| Noise level | 60 dB | 60 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Camera (vSLAM) |
| Navigation sensors | LiDAR laser (LDS), Cliff sensors | vSLAM camera |
| Obstacle avoidance | Basic sensors (infrared / bumper) | — |
| Threshold climbing | 20 mm | — |
| Room mapping & room selection | Yes | Yes |
| Base station | ||
| Base station | Auto-empty dock | Charging dock |
| Auto-empty dust station | Yes | — |
| Battery & runtime | ||
| Runtime | 180 min | — |
| Charging time | 300 min | 180 min |
| Recharge & resume | Yes | — |
| Size & weight | ||
| Width / diameter | 353 mm | — |
| Length | 353 mm | — |
| Height | 96 mm | — |
| Weight | 4.7 kg | — |
| Shape | Round | — |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | Apple Siri |
| Remote control | Yes | Yes |
