
Amazon Smart Plug
Score: 72/100
Kasa Outdoor Smart Plug
Score: 81/100Rankings

The Kasa Outdoor Smart Plug (KP401) provides weather-proof, dual-outlet control with a long 300 ft Wi-Fi range, making it ideal for garden lights, pumps and other outdoor devices. Its limitations include a 2.4 GHz-only connection, the need to cap unused sockets, and a relatively large size. It is best suited for homeowners who need reliable, voice-controlled outdoor power management.

The Amazon Smart Plug is a Wi-Fi plug optimized for Alexa with built-in energy monitoring, offering easy setup and reliable control for small appliances. Its limitation lies in being Alexa-only and occasional Wi-Fi stability issues, making it less ideal for multi-platform homes. Best suited for Alexa-centric users seeking energy insights.
| Attribute | ![]() | ![]() |
|---|---|---|
1,800 W | 1,875 Wbest | |
120 V | 125 Vbest | |
15 Abest | 15 Abest | |
1 years | 2 yearsbest | |
| ↓ lower better | 86 gbest | 290 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Power(2) | ||
Input Voltage (V) | 120 V | 125 V |
Maximum Power Rating (W) | 1800 W | 1875 W |
General(1) | ||
Warranty (years) (years) | 1 years | 2 years |
Build & Design(3) | ||
Device Weight (g) | 86 g | 290 g |
Device Dimensions (L×W×H) (mm) | 80x38x57 mm mm | 124.6×60.5×58.2 mm mm |
Plug Type (Region) | NEMA 5-15P | Type A |


Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the Amazon Smart Plug for its effortless Alexa integration, straightforward no-hub Wi-Fi setup, and useful energy-monitoring features, while noting its limited ecosystem support and slightly bulky form factor as drawbacks.
Everyday users appreciate the quick Alexa app setup, reliable on/off control, and value it adds to routine automation, but they frequently mention the plug's size and occasional Wi-Fi stability issues as pain points.

Professional reviewers commend the KP400 for its exceptional 300 ft Wi-Fi range, robust IP64 protection, and dual-outlet independent control, emphasizing its suitability for outdoor lighting and pump automation. They also note the fire-retardant housing and ETL safety certification as strong safety credentials, while calling out the bulkier size and 2.4 GHz-only limitation as minor drawbacks.
Consumers repeatedly praise the plug's reliable app control, seamless Alexa voice integration, and durable weatherproof design that holds up in rain. Common themes include appreciation for the long Wi-Fi range and dual outlets, balanced by complaints about occasional connectivity drops, iOS setup hiccups, and the requirement to cap unused sockets.
“"Reliable app/remote control from anywhere" - Customer review”

“"Robust weatherproofing surviving rain/splashes" - Customer review”

