Shelly Plus 1PM UL WiFi Smart Relay Switch - Power Metering

In this review of the Shelly Plus 1PM UL the bottom line is straightforward: this is a compact, reliable smart relay for anyone who needs remote control plus accurate power metering without a hub. The device stands out for combining a 1-channel relay capable of handling heavy loads with integrated power monitoring and optional Bluetooth gateway and Wi-Fi repeater functions. Installers and smart home hobbyists will appreciate the UL certification and the ability to monitor individual appliances, while those who want a simple plug-and-play smart breaker alternative will value its solid build and compatibility with common automation platforms.

Key Features

• 1-channel relay: Controls a single circuit up to 15A so it can safely switch kitchen appliances and domestic systems with higher loads.
• Power metering: Built-in precise meter lets users monitor consumption per appliance for cost tracking and smarter automation decisions.
• Wi-Fi and Bluetooth gateway: Acts as a Wi-Fi operated smart switch and can function as a Bluetooth gateway, expanding integration options for mixed networks.
• Wi-Fi repeater capability: Can extend wireless coverage in a home network, useful in larger houses or basements where signal is weak.
• Automation and scenes: Integrates with the Shelly app to trigger scenes based on time, light levels, or other device events for coordinated control.
• UL certification and warranty: UL certified for safety and backed by a three year device warranty and Shelly support for peace of mind.

Who It's For

The Shelly Plus 1PM UL is ideal for homeowners and DIY installers who need reliable remote control of higher-load appliances and want per-device energy monitoring without investing in larger electrical upgrades. It suits people who run Home Assistant or similar platforms and want a compact relay they can hide in a junction box or behind switches.

It is less suitable for users who prefer fully integrated single-vendor ecosystems with a physical central hub or those who need multi-channel relay modules in one enclosure; in those cases a different multi-channel device might be a better fit.

Pros & Cons

Pros

• Accurate integrated power metering provides actionable consumption data for each appliance.
• Supports heavy loads up to 15A, making it useful for kitchen and domestic systems.
• Flexible connectivity as a Wi-Fi relay with Bluetooth gateway and repeater capabilities.
• Solid build quality and broad platform compatibility make integration straightforward.

Cons

• Requires some electrical know-how for safe installation and correct wiring with appropriate wire size.
• Single channel design means multiple relays require multiple devices for multi-circuit control.

Specifications

Product Type	Wi-Fi smart relay switch with power metering
Channels	1 channel
Maximum Load	Up to 15A
Connectivity	Wi-Fi; Bluetooth gateway; Wi-Fi repeater
Certification	UL certified
App	Shelly Smart Control App (remote control and scenes)
Warranty	3 years device warranty

Our Verdict

The Shelly Plus 1PM UL is a practical, cost-effective choice for anyone who needs a single-channel relay with reliable power metering and flexible connectivity. It delivers professional-grade safety with UL certification, accurate consumption data, and useful gateway features, so it represents strong value for homeowners and integrators who want precise control of individual high-load appliances.

Frequently Asked Questions

Can the Shelly Plus 1PM measure power consumption for a single appliance?
Yes. The built-in power meter provides precise consumption readings for the connected circuit so you can track usage per appliance.

Does this device need a hub to work?
No. The Shelly Plus 1PM operates over Wi-Fi and can be controlled via the Shelly app without a separate hub, though it can also act as a Bluetooth gateway if needed.

Is it safe to use with higher-draw devices like ovens or water heaters?
The relay is rated up to 15A and is UL certified, making it suitable for many high-load appliances, but installers should verify local wiring and appropriate wire size for the intended load.