Updated September 2026
Data from Amazon and official Sonoff and TP-Link sites.
2026 verdict
In this 2026 TP-Link Tapo P125M vs Sonoff WiFi Smart Plug S40 comparison, TP-Link Tapo P125M comes out ahead thanks to price, rating, and warranty.
What pushes it ahead is price, rating, and warranty, and its broader overall balance keeps the advantage from looking narrow. You should still consider Sonoff WiFi Smart Plug S40 if Overheat/Overload protection and energy monitoring matter more than raw overall balance. In practical terms, TP-Link Tapo P125M is the easier product to recommend.
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| Feature | Sonoff WiFi Smart Plug S40 | TP-Link Tapo P125M | Winner |
|---|---|---|---|
| Price | $10.90 | $9.99 | TP-Link Tapo P125M |
| Rating | 4.2 | 4.5 | TP-Link Tapo P125M |
| Warranty | 1 year | 2 years | TP-Link Tapo P125M |
| Overheat/Overload Protection | YES | NO | Sonoff WiFi Smart Plug S40 |
| Energy Monitoring | YES | NO | Sonoff WiFi Smart Plug S40 |
| Weather Resistance | NO | NO | Tie |
| Plug Format | Type B | Type B | Tie |
| Maximum Load Power | 1800W | 1800W | Tie |
| Connectivity | 2.4 GHz WiFi, Bluetooth | 2.4 GHz WiFi, Bluetooth | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| On/Off Button | YES | YES | Tie |
| Zibgee Router | NO | NO | Tie |
- + Overheat/Overload Protection: YES
- + Energy Monitoring: YES
- - Price: $10.90 vs $9.99
- - Rating: 4.2 vs 4.5
Winner
17% OFF
$9.99
$11.99
- + Price: $9.99
- + Rating: 4.5
- + Warranty: 2 years
- - Overheat/Overload Protection: NO vs YES
- - Energy Monitoring: NO vs YES
Frequently Asked Questions
Which is better overall: Sonoff WiFi Smart Plug S40 or TP-Link Tapo P125M?
TP-Link Tapo P125M has the stronger overall profile in this comparison, especially for price, rating, and warranty.
What is the biggest difference between Sonoff WiFi Smart Plug S40 and TP-Link Tapo P125M?
Price is one of the clearest differences: Sonoff WiFi Smart Plug S40 lists $10.90, while TP-Link Tapo P125M lists $9.99.
Which one looks better on price?
Sonoff WiFi Smart Plug S40 is listed at $10.90, while TP-Link Tapo P125M is listed at $9.99. TP-Link Tapo P125M (better spec).
Who should buy Sonoff WiFi Smart Plug S40?
Choose Sonoff WiFi Smart Plug S40 if your priority is Overheat/Overload protection and energy monitoring and that matters more than price.
Who should buy TP-Link Tapo P125M?
Choose TP-Link Tapo P125M if your priority is price and rating and that matters more than Overheat/Overload protection.
Full comparison table
Compare all 33 Plugs side by side
You are looking at two of them. The full table lines up all Plugs in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 33 Plugs
- 31 specs compared
- 28 filters
SonoffiPlug Gen2 Type B Matter Over WiFi Smart Plug
$13.90
ZoozSmart Plug ZEN04 800LR
$35.95
AmazonSmart Plug
$24.99
PhilipsHue Smart plug (US)
$30.99
PhilipsHue Smart plug (EU)
23% OFF€34.99€26.99
GoveeSmart Plug Pro with Energy Monitoring
10% OFF$16.99$15.29
YoLinkMini Plug
20% OFF$24.99$19.99
YoLinkSmart Outdoor Energy Plug
15% OFF$32.98$27.99
FibaroWall Plug (EU)
GoveeSmart Plug Pro
$12.99
TP-LinkTapo P125M
17% OFF$11.99$9.99
AqaraSmart Plug (EU)
ShellyPlug M Gen3
$14.99
SonoffWiFi Smart Plug S60
SonoffiPlug Gen2 Type F Matter Over WiFi Smart Plug
$9.99
MerossOutdoor Smart Plug (3 Sockets)
10% OFF$30.99$27.89
MerossOutdoor Smart Plug
$25.99
AqaraSmart Plug (US)
$32.99
ShellySmart Plug (US)
29% OFF$30.87$22.00
SonoffZigbee Smart Plug S40 Lite
$12.99
Air Quality MonitorsSonoffSAWF-07P Air Quality Monitor
3.7(178)$39.90
Air Quality MonitorsSonoffSAWF-08P Air Quality Monitor
4.2(162)$49.90
CamerasSonoffCAM GlassView
$34.90
CamerasSonoffCam Slim Gen2
4.4(158)$19.90
CamerasSonoffGK-200MP2-B
4.0(149)30% OFF$9.99$6.99
DisplaysSonoffNSPanel Pro Gen2
3.3(10)€149.90
DisplaysSonoffNSPanel Pro
4.0(70)$129.90
DonglesSonoffDongle Lite MG21
4.6(401)25% OFF$24.90$18.68
DonglesSonoffDongle Max
4.2(544)
DonglesSonoffDongle Plus MG24
4.7(630)$35.90
DonglesSonoffDongle Plus PP10
4.7(70)$35.90
DonglesSonoffDongle-PZG23
4.6(170)10% OFF$39.90$35.91
DonglesSonoffZBDongle-E
4.6(3,717)$24.90
DonglesSonoffZBDongle-P
4.6(5,627)15% OFF$39.99$34.07
Door & Window SensorsSonoffDW2-WIFI
3.8(1,059)$12.23
Door & Window SensorsSonoffSNZB-04 ZigBee Wireless Door/Window Sensor
3.8(102)$17.99
Door & Window SensorsSonoffSNZB-04P ZigBee Door/Window Sensor
3.9(12)$18.99
Door & Window SensorsSonoffSenseGuard DW Gen2
4.4(171)
Energy MonitorsSonoffMINI PM Matter Over WiFi Power Meter (Non-Switch)
$15.90
Energy MonitorsSonoffMINI PM Zigbee Power Meter (Non-Switch)
4.1(82)$15.90
CamerasTP-LinkTapo C100
4.4(28,717)28% OFF$24.99$17.98
CamerasTP-LinkTapo C120
4.4(5,363)$39.99
CamerasTP-LinkTapo C210
4.5(22,360)$29.99
CamerasTP-LinkTapo SolarCam C402
4.2(4,855)$49.99
CamerasTP-LinkKasa EC70
4.4(34,056)30% OFF$29.99$20.98
CamerasTP-LinkKasa KC420WS
4.4(4,835)24% OFF$49.99$37.99
CamerasTP-LinkTapo C200
4.5(42,235)$26.99
CamerasTP-LinkTapo C246D
4.5(792)$69.99
CamerasTP-LinkTapo C260
4.6(588)$59.99
CamerasTP-LinkTapo C460
4.4(198)29% OFF$119.99$84.99
CamerasTP-LinkTapo C500
4.5(6,990)$39.99
CamerasTP-LinkTapo C560WS
4.2(583)$99.99
CamerasTP-LinkTapo C615F KIT
4.4(522)$79.99
CamerasTP-LinkTapo C660
4.3(906)32% OFF$169.99$115.99
CamerasTP-LinkTapo MagCam
4.5(3,149)18% OFF€64.90€52.99
DoorbellsTP-LinkTapo D210
4.4(3,623)$58.00
Door LocksTP-LinkTapo DL100
4.5(560)14% OFF$69.99$59.99
HubsTP-LinkTapo H100
4.5(847)$22.99
HubsTP-LinkTapo H500
4.5(550)$179.99
Light StripsTP-LinkTapo L930-5
3.9(395)17% OFF$35.99$29.99