Winner
Updated November 2026
Data from the official TP-Link site.
2026 verdict
TP-Link Tapo C120 is the more complete option versus TP-Link Kasa KC420WS in 2026, helped most by weather resistance, RTSP, and alerts.
The comparison tilts its way because of weather resistance, RTSP, and alerts, with local control keeping it in front. TP-Link Kasa KC420WS still makes sense if price and rating are your priority, but most buyers should still lean toward TP-Link Tapo C120. Overall, TP-Link Tapo C120 makes more sense for most people.
Connectivity
- Wi-Fi 2.4 GHz
vs
10% OFF
$44.99
$49.99
Works with
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | TP-Link Tapo C120 | TP-Link Kasa KC420WS | Winner |
|---|---|---|---|
| Price | $56.99 | $44.99 | TP-Link Kasa KC420WS |
| Rating | 4.3 | 4.4 | TP-Link Kasa KC420WS |
| Weather Resistance | IP66 | IP65 | TP-Link Tapo C120 |
| RTSP | YES | NO | TP-Link Tapo C120 |
| Alerts | Motion, People, Animals, Vehicles, Glass breaking Sound, Baby Crying Sound | Motion, People | TP-Link Tapo C120 |
| Local Control | YES | Partially | TP-Link Tapo C120 |
| Warranty | 2 years | 2 years | Tie |
| PoE | NO | NO | Tie |
| Solar Charging | NO | NO | Tie |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Storage | MicroSD Card Slot, Cloud | MicroSD Card Slot, Cloud | Tie |
| 2K Video | YES | YES | Tie |
Winner
$56.99
- + Weather Resistance: IP66
- + RTSP: YES
- + Alerts: Motion, People, Animals, Vehicles, Glass breaking Sound, Baby Crying Sound
- - Price: $56.99 vs $44.99
- - Rating: 4.3 vs 4.4
10% OFF
$44.99
$49.99
- + Price: $44.99
- + Rating: 4.4
- - Weather Resistance: IP65 vs IP66
- - RTSP: NO vs YES
Frequently Asked Questions
Which is better overall: TP-Link Tapo C120 or TP-Link Kasa KC420WS?
TP-Link Tapo C120 has the stronger overall profile in this comparison, especially for weather resistance, RTSP, and alerts.
What is the biggest difference between TP-Link Tapo C120 and TP-Link Kasa KC420WS?
Price is one of the clearest differences: TP-Link Tapo C120 lists $56.99, while TP-Link Kasa KC420WS lists $44.99.
Which one looks better on price?
TP-Link Tapo C120 is listed at $56.99, while TP-Link Kasa KC420WS is listed at $44.99. TP-Link Kasa KC420WS (better spec).
Who should buy TP-Link Tapo C120?
Choose TP-Link Tapo C120 if your priority is weather resistance 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 weather resistance.
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