Winner
Updated October 2026
Data from the official Sonoff and TP-Link sites.
2026 verdict
Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug has the better all-around case than TP-Link Kasa EP40 in 2026, starting with price, maximum load power, and energy monitoring.
The main reason it wins is price, maximum load power, and energy monitoring, and connectivity and integrations strengthen that case. There is still a case for TP-Link Kasa EP40, but mainly if rating and weather resistance are what you value most. Overall, Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug makes more sense for most people.
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| Feature | Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug | TP-Link Kasa EP40 | Winner |
|---|---|---|---|
| Price | £22.51 | $22.99 | Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug |
| Rating | 4.4 | 4.6 | TP-Link Kasa EP40 |
| Weather Resistance | IP44 | IP64 | TP-Link Kasa EP40 |
| Maximum Load Power | 3840W | 1875W | Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug |
| Energy Monitoring | YES | NO | Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug |
| Connectivity | 2.4 GHz WiFi, Bluetooth | 2.4 GHz WiFi | Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Samsung SmartThings, Home Assistant | Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug |
| Plug Format | Type F | Type B | Different strengths |
| Warranty | 2 years | 2 years | Tie |
| On/Off Button | YES | YES | Tie |
| Zigbee Router | NO | NO | Tie |
Winner
£22.51
- + Price: £22.51
- + Maximum Load Power: 3840W
- + Energy Monitoring: YES
- - Rating: 4.4 vs 4.6
- - Weather Resistance: IP44 vs IP64
8% OFF
$22.99
$24.99
- + Rating: 4.6
- + Weather Resistance: IP64
- - Price: $22.99 vs £22.51
- - Maximum Load Power: 1875W vs 3840W
Frequently Asked Questions
Which is better overall: Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug or TP-Link Kasa EP40?
Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug has the stronger overall profile in this comparison, especially for price, maximum load power, and energy monitoring.
What is the biggest difference between Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug and TP-Link Kasa EP40?
Price is one of the clearest differences: Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug lists £22.51, while TP-Link Kasa EP40 lists $22.99.
Which one looks better on price?
Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug is listed at £22.51, while TP-Link Kasa EP40 is listed at $22.99. Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug (better spec).
Who should buy Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug?
Choose Sonoff S61s Outdoor Type F Matter Over WiFi Smart Plug if your priority is price and maximum load power and that matters more than rating.
Who should buy TP-Link Kasa EP40?
Choose TP-Link Kasa EP40 if your priority is rating and weather resistance and that matters more than price.
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