SwitchBot Relay Switch 1PM Review: A Compact In-Wall Relay With Real Energy Monitoring
Fits behind existing switches and outlets, adds Matter, Alexa, HomeKit and Google Home control plus power tracking, though full consumption data over Matter is still missing.
The SwitchBot Relay Switch 1PM is a compact in-wall relay that turns an existing switch or outlet into a smart, monitored circuit without rewiring the wall. Buyers consistently praise how easily it tucks into a standard wall box, how fast it responds through the SwitchBot app, Matter, Alexa, HomeKit or Google Home, and how useful the built-in energy monitoring is for tracking appliances like washing machines. The main trade-offs are a SwitchBot account requirement to complete setup and a Matter integration that still doesn't expose power readings. For anyone retrofitting switches, lights or garage/exterior circuits into a smart home, it is a solid, safety-conscious pick.
- Retrofitting existing wall switches without rewiring
- Home Assistant and Matter smart home setups
- Tracking appliance energy usage
- Automating lights, ventilation and garage circuits
Pros
- Compact enough to fit behind existing switches and outlets without rewiring
- Fast, reliable switching with minimal lag
- Built-in energy monitoring for tracking appliance power use
- Broad integrations: Matter, Alexa, Google Home, Apple HomeKit, SmartThings, Home Assistant, IFTTT
- Overheating and overcurrent protection with a flame-retardant enclosure
- Also works as a Bluetooth repeater for other SwitchBot devices
Cons
- Requires the SwitchBot app and an account to complete setup, even for Matter/Home Assistant use
- Energy monitoring data does not yet carry over to Matter-connected hubs
- Screw terminals can be fiddly with thicker gauge wiring
- No overvoltage or overpower protection, and no physical on/off button
- No DIN rail mounting or interlock/cover mode for roller shutters
Who is the SwitchBot Relay Switch 1PM for?
This relay is aimed at smart home owners who want to automate a hardwired switch, light or small appliance circuit without replacing the wall switch itself or running new wiring. Its compact dimensions let it sit behind an existing switch or outlet, and buyers frequently mention using it for exterior lighting, garage ventilation fans and washing machine or dishwasher monitoring. Since it supports AC power up to 240V as well as DC and both resistive and inductive loads with a 16A resistive current rating, it covers most single-channel household switching needs, and its wireless switch mode plus dry and wet contact modes give installers flexibility for different wiring setups.
What buyers love
The most consistent praise is how straightforward installation and app setup are, several reviewers describe pairing it with Apple Home, Matter or Home Assistant in minutes. The built-in energy monitoring stands out as a genuine differentiator: buyers use it to see real-time power draw and get notified when an appliance finishes its cycle. Reviewers also call out fast switching with no noticeable lag, a compact and well-built enclosure, and the bonus of the device acting as a Bluetooth repeater for other SwitchBot gear. The overload and overcurrent protection, paired with a flame-retardant housing, was noted as reassuring for an in-wall device that stays powered continuously.
What to know before you buy
The device requires the SwitchBot app and an account to complete initial setup, even for users who only want to use it locally through Matter or Home Assistant afterward, which a few reviewers found unnecessarily gated. Matter support is present but currently incomplete: several buyers note that energy monitoring data does not carry over to Matter-based hubs, so full power readings are only available inside the SwitchBot app. The screw terminals were described as somewhat delicate with thicker gauge wiring, and there is no overvoltage or overpower protection built in, only overheating and overcurrent protection, so pairing it with a dedicated surge protector is worth considering on less stable circuits. It also lacks a physical on/off button, an interlock/cover mode and DIN rail mounting, so it is not designed for panel-mount or shutter/roller control installations.
Is the SwitchBot Relay Switch 1PM worth it?
For a compact, single-channel relay with energy monitoring, wide voltage support and broad ecosystem integrations (Matter, Alexa, Google Home, Apple HomeKit, SmartThings, Home Assistant and IFTTT), the 1PM lands as a well-rounded and budget-friendly choice for retrofitting a single switch or circuit. Feedback skews positive, with most owners rating it highly for reliability and ease of installation, and the rough edges (Matter energy data, account requirement, terminal size) are workarounds rather than dealbreakers. Buyers who need multi-channel control, DIN rail mounting or roller/cover mode should look elsewhere in the lineup, but for a single hardwired switch or appliance circuit this is a capable pick backed by a one-year warranty.
Frequently asked questions
Does the SwitchBot Relay Switch 1PM need a neutral wire?
Yes, this relay requires a neutral wire connection to install, which is standard for most in-wall smart relays with continuous power and monitoring features.
Does it work with Matter, Alexa, Google Home and Apple HomeKit?
Yes, it supports Matter along with native Alexa, Google Home, Apple HomeKit, Samsung SmartThings, Home Assistant and IFTTT integrations, though energy monitoring data is currently only fully available through the SwitchBot app rather than over Matter.
Can the SwitchBot Relay Switch 1PM monitor energy usage?
Yes, energy monitoring is built in and lets you track real-time power consumption of the connected circuit or appliance directly in the SwitchBot app.
Does it need a SwitchBot account to set up?
Yes, initial pairing goes through the SwitchBot app, which requires an account, even if you plan to control the device afterward through Matter or a platform like Home Assistant.
What loads can the SwitchBot Relay Switch 1PM handle?
It supports AC power from 100 to 240V and DC power, with resistive loads up to 16A and DC loads up to 10A, covering lights, fans, motors and small household appliances on a single channel.
Does it support DIN rail mounting or multiple channels?
No, it is a single-channel relay designed to fit behind an existing wall switch or outlet box, and it does not support DIN rail mounting or interlock/cover mode for roller shutters.


