Updated July 2026
Data from Amazon and official TP-Link site.
2026 verdict
TP-Link Tapo SolarCam C402 is the more complete option versus TP-Link Kasa KC420WS in 2026, helped most by solar charging, RTSP, and alerts. Its strongest advantages show up in solar charging, RTSP, and alerts, with privacy zone helping widen the gap. TP-Link Kasa KC420WS still makes sense if price, rating, and 2K video are your priority, but most buyers should still lean toward TP-Link Tapo SolarCam C402. That is why TP-Link Tapo SolarCam C402 wins the verdict here.
| Feature | TP-Link Tapo SolarCam C402 | TP-Link Kasa KC420WS | Winner |
|---|---|---|---|
| Price | $47.99 | $37.99 | TP-Link Kasa KC420WS |
| Rating | 4.2 | 4.4 | TP-Link Kasa KC420WS |
| Solar Charging | YES | NO | TP-Link Tapo SolarCam C402 |
| 2K Video | NO | YES | TP-Link Kasa KC420WS |
| RTSP | YES | NO | TP-Link Tapo SolarCam C402 |
| Alerts | Motion, People, Vehicles | Motion, People | TP-Link Tapo SolarCam C402 |
| Privacy Zone | YES | NO | TP-Link Tapo SolarCam C402 |
| Warranty | 2 years | 2 years | Tie |
| Weather Resistance | IP65 | IP65 | Tie |
| PoE | NO | NO | Tie |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Storage | MicroSD Card Slot, Cloud | MicroSD Card Slot, Cloud | Tie |
Winner
$47.99
- + Solar Charging: YES
- + RTSP: YES
- + Alerts: Motion, People, Vehicles
- - Price: $47.99 vs $37.99
- - Rating: 4.2 vs 4.4
24% OFF
$37.99
$49.99
- + Price: $37.99
- + Rating: 4.4
- + 2K Video: YES
- - Solar Charging: NO vs YES
- - RTSP: NO vs YES
Frequently Asked Questions
Which is better overall: TP-Link Tapo SolarCam C402 or TP-Link Kasa KC420WS?
TP-Link Tapo SolarCam C402 has the stronger overall profile in this comparison, especially for solar charging, RTSP, and alerts.
What is the biggest difference between TP-Link Tapo SolarCam C402 and TP-Link Kasa KC420WS?
Price is one of the clearest differences: TP-Link Tapo SolarCam C402 lists $47.99, while TP-Link Kasa KC420WS lists $37.99.
Which one looks better on price?
TP-Link Tapo SolarCam C402 is listed at $47.99, while TP-Link Kasa KC420WS is listed at $37.99. TP-Link Kasa KC420WS (better spec).
Who should buy TP-Link Tapo SolarCam C402?
Choose TP-Link Tapo SolarCam C402 if your priority is solar charging and RTSP and that matters more than price.
Who should buy TP-Link Kasa KC420WS?
Choose TP-Link Kasa KC420WS if your priority is price and rating and that matters more than solar charging.
