Typically used for
Power measurement
Energy saving
Key Features
Equipped with a new processor & increased flash memory - ESP Shelly
Improved durability of terminals
Supports up to 16 A at 240 VAC
Precise and real-time power metering with free cloud data storage for analysis and energy usage optimization.
Wi-Fi range extender & Bluetooth gateway
No hub required! Easy control through the Shelly Smart Control app, most platforms and protocols, as well as voice assistants. Use it Home Assistant or your preferred automation platform
Supports scripting, webhooks, MQTT, WebSocket, HTTPS, UDP, TLS and custom certificates *This is only a power meter. There is no relay inside.
Device identification
Device name: Shelly PM Mini Gen3
Device model: S3PM-001PCEU16
Device SSID: ShellyPMMiniG3-XXXXXX
BLE model ID: 0x1023
Short description
Shelly PM Mini Gen3 is a small form factor power meter. Enhanced with all the gen2 firmware flexibility, it provides professional integrators with additional options for end-customer solutions. It can work standalone in a local Wi-Fi network, or it can also be operated through cloud home automation services through MQTT, HTTP, and WebSocket. All inbound connections support TLS. The device is an improved version of Shelly Plus PM Mini with a more advanced processor and increased memory.
Shelly PM Mini Gen3 can be accessed, set up, and monitored remotely by the User, as well as the Device can access and communicate with an automation system, as long as they are in the same network infrastructure.
The Device has an embedded Web Interface which can be used to monitor and control the device, as well as adjust its settings.
Main features
Power Meter: Designed as a small form factor power meter, allowing you to monitor the power consumption of connected devices.
Enhanced Firmware Flexibility: Inherits the flexibility of gen2 firmware, providing professional integrators with additional options for end-customer solutions.
Compact size: PM Mini Gen3 can be connected in very tiny spaces, unreachable for other devices.
Improved Processor and Memory: Upgraded with an improved processor and increased memory for enhanced performance.
Remote Access: Can be accessed, set up, and monitored remotely by the user, as well as communicate with an automation system within the same network infrastructure.
Embedded Web Interface: Features an embedded web interface for monitoring, control, and adjustment of settings.
BLE Gateway: Bridge between your Shelly BLU devices and the wider Shelly ecosystem. It receives Bluetooth signals and sends them to the cloud or locally to another non-bluetooth device.
WiFi Range extender for IoT devices: A WiFi extender is employed to expand the reach of your WiFi network by receiving your current WiFi signal, enhancing its strength, and then transmitting the enhanced signal over a wider area.
Scripting: https://shelly-api-docs.shelly.cloud/gen2/ComponentsAndServices/Script
Wide range of integrations: The device can be integrated with 3rd party home systems, documented HTTP API, MQTT(s), Web Hooks over HTTP and HTTPS, UDP
Use cases
Power Consumption Monitoring: The primary purpose is to monitor the power consumption of connected devices in real-time. This information can be valuable for understanding energy usage patterns and making informed decisions to reduce consumption.
Energy Efficiency Optimization: Identify energy-hungry appliances and optimize their usage to improve overall energy efficiency in your home or workspace.
Appliance Health Check: Keep track of the power usage of individual appliances to assess their health and performance over time. Sudden spikes or changes in power consumption may indicate issues with the appliance.
Cost Management: With the knowledge of power consumption, you can estimate the cost of running specific devices and manage your electricity expenses more effectively.
Space-Efficient Retrofitting: Integrate the device into standard electrical wall boxes, behind power sockets, light switches, or other locations with limited space.
Remote Monitoring: Like the Shelly 1PM Mini Gen3, the PM Mini Gen3 also supports remote access. This allows you to monitor power consumption even when you're away from home.
Simplified internal schematics

Device electrical interfaces
Inputs
2 line inputs on screw terminals: 1 L and 1 N
Outputs
2 load circuit outputs (bridged internally): 2 O
Connectivity
Wi-Fi
Bluetooth
Supported load types
Resistive (incandescent bulbs, heating devices)
Capacitive (LED light drivers, capacitor banks, electronic equipment, motor start capacitors)
Inductive (transformers, fans, refrigerators, air-conditioners)
User interface
Inputs
One (Control) button
Press and hold for 5 seconds to enable Device access point and Bluetooth connection.
Press and hold for 10 seconds to factory reset the Device.
Outputs
LED (monocolor) indication
AP (Access Point) enabled and Wi-Fi disabled:
1 second ON / 1 second OFFWi-Fi enabled, but not connected to a Wi-Fi network:
1 second ON / 3 seconds OFFConnected to a Wi-Fi network:
Constantly ONCloud is enabled, but not connected:
1 second ON /5 seconds OFFConnected to Shelly Cloud:
Constantly ONOTA (Over the Air Update):
½ sec ON / ½ second OFFButton pressed and held for 5 seconds:
½ second ON / ½ second OFFButton pressed and held for 10 seconds:
¼ second ON / ¼ second OFF
The list above starts with the initial device status and the lowest priority. Every next state cancels the previous one.
Quantity | Value |
|---|---|
Physical | |
Size (HxWxD): | 29x34x16 / 1.34x1.11x0.63 in |
Weight: | 13 g / 0.46 oz |
Screw terminals max torque: | 0.4 Nm / 3.5 lbin |
Conductor cross section: | 0.5 to 4 mm² / 20 to 11 AWG (solid, stranded, and bootlace ferrules) |
Conductor stripped length: | 6 to 7 mm / 0.24 to 0.28 in |
Mounting: | Wall box |
Shell material: | Plastic |
Shell color: | Light gray, C: 0%; M: 0%; Y: 0%; K: 20% |
Terminal Color: | Black |
Environmental | |
Ambient working temperature: | -20 °C to 40 °C / -5 °F to 105 °F |
Humidity: | 30 % to 70 % RH |
Max. altitude: | 2000 m / 6562 ft |
Electrical | |
Power supply: | 110 - 240 VAC |
Power consumption: | < 1.2 W |
External protection: | Tripping characteristic B or C, |
Output circuits ratings | |
Power measurement: | Yes |
Max. measurement voltage: | 240 VAC |
Max. measurement current: | 16 A |
Max. measurement power: | 3840 W |
Radio | |
Wi-Fi | |
Protocol: | 802.11 b/g/n |
RF band: | 2401 - 2495 MHz |
Max. RF power: | < 20 dBm |
Range: | Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors |
Bluetooth | |
Protocol: | 4.2 |
RF band: | 2400 - 2483.5 MHz |
Max. RF power: | < 4 dBm |
Range: | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors |
Microcontroller unit | |
CPU: | ESP-Shelly-C38F |
Flash: | 8 MB |
Firmware capabilities | |
Schedules: | 20 |
Webhooks (URL actions): | 20 with 5 URLs per hook |
Scripting: | Yes |
MQTT: | Yes |
UDP: | Yes |
Advanced schedules: | Yes |
KVS (Key-Value Store): | Yes |
Basic wiring diagrams

Legend
Terminals | Wires | ||
|---|---|---|---|
O | Load circuit output terminals (bridged internally) | L | Live (110-240 V) wire |
L | Live (110-240 V) terminal | N | Neutral wire |
N | Neutral terminal |
What are the differences between the different generations of Shelly products?
Each new generation adds more power, memory, and features:
Gen 1 offers basic control;
Gen 2 (Plus Series, Mini Series, Pro Series) adds Bluetooth, scripting, and better security;
Gen 3 improves performance, adds Matter (starting from firmware version 1.6.0 or newer) and advanced monitoring;
Gen 4 offers multi-protocol connectivity, featuring Wi-Fi 6, Bluetooth, Zigbee, and Matter.
Learn more: Comparison of Shelly Gen 1, Gen 2 and Gen 3 devices (Shelly support)
Can I control the device via Bluetooth?
No, the protocol is used only for device inclusion, allowing for quick and easy setup through the Shelly Smart Control app.
For bluetooth control it is required to have another Bluetooth device such as Shelly BLU Button or Shelly BLU Motion to interact.
Additionally, Shelly devices can function as a BLE gateway, bridging Shelly BLU devices to your Wi-Fi network.
Is it possible to use the device without a hub?
Yes, Shelly devices (except for Wave devices) operate independently without the need for a hub. They connect directly to your Wi-Fi network, and you can control them via the Shelly Smart Control app, web interface, or through integrations with platforms like Google Home, Alexa, Home Assistant and Samsung SmartThings.
Use cases
Preventative monitoring
When an electrical appliance is damaged, it doesn't simply stop working. Usually, it increases the amount of energy used in an attempt to compensate for its operational capacity.
Power consumption analysis for cost optimization
All connected electrical appliances we don't use during the night or forgotten switched-on lights generate unnecessary energy.
On the Road to Matter
Each Gen3 device is engineered to be upgradable to Matter. The doubled memory, compared to Plus series, guarantees a smooth update process, paving the way for new smart capabilities and integrations.
More Memory, More Power
The Gen3 series ensures the quality and reliability of our devices by using our own powerful Shelly chip. Boasting 8MB of memory, this dramatically improves device performance and efficiency.