Shelly 2PM Gen4 Smart Switch with Power Monitoring & Matter Support
The Shelly 2PM Gen4 is a compact 2-channel smart relay switch designed for advanced home automation. Perfect for controlling lights, fans, motorized blinds, and other electrical appliances, this device features built-in power monitoring on each channel, allowing you to track energy consumption in real-time. With support for Wi-Fi, Bluetooth, Zigbee, and Matter, the 2PM Gen4 integrates seamlessly with major smart home platforms including Google Home, Amazon Alexa, Apple HomeKit, SmartThings, and Home Assistant. Its ultra-compact design fits behind existing wall switches and power outlets, making it ideal for retrofitting homes and offices with smart control.
Why You'll Love the Shelly 2PM Gen4
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Dual-Channel Control: Independently control two separate circuits up to 16A total (10A per channel), perfect for lights, fans, or bi-directional motors
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Real-Time Power Monitoring: Track energy consumption per channel to optimize efficiency and reduce power bills
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Multi-Protocol Connectivity: Works with Wi-Fi, Bluetooth, Zigbee, and Matter out of the box - no expensive hubs required
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Motorized Blind & Shutter Control: Dedicated cover mode with venetian blind support, slat angle control, and obstacle detection for safe automation
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Universal Compatibility: Control via Shelly app, voice assistants (Alexa, Google Assistant, Siri), or local automation platforms like Home Assistant
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Compact Retrofit Design: Fits in standard electrical wall boxes behind switches and sockets, even in tight spaces
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Upgraded Performance: Improved processor and increased memory compared to Gen3 for faster operation and advanced scripting
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3-Year Warranty: Covered by Shelly's comprehensive warranty for Gen4 devices
Smart Home Automation Made Easy
The Shelly 2PM Gen4 enables complete control of your home's electrical devices through your smartphone, tablet, or home automation system. Use it standalone on a local Wi-Fi network for privacy-focused operation, or connect to cloud services for remote access from anywhere. Create custom schedules, scenes, and automations based on time of day, energy consumption, or sensor triggers. The device supports scripting and virtual components, unlocking advanced automation possibilities for power users.
Perfect for Motorized Window Coverings
Designed with blinds and shutters in mind, the 2PM Gen4 features a dedicated cover/roller mode that treats both channels as a unified bi-directional motor controller. Automate your window coverings to open at sunrise for natural light and close during peak heat to improve energy efficiency. The venetian blind mode even lets you adjust slat angles for precise light control. Built-in safety features include obstacle detection and support for motors with electronic or mechanical limit switches.
Energy Monitoring & Efficiency
With per-channel power measurement, the Shelly 2PM Gen4 gives you detailed insights into your home's energy usage. Monitor consumption in real-time through the Shelly app, store data locally or in the cloud, and identify which devices are using the most power. Perfect for tracking critical equipment like routers and modems, or understanding the energy impact of heating, cooling, and lighting systems across your home or office.
Wide Ecosystem Support
The Shelly 2PM Gen4 works with all major smart home platforms and protocols, including:
- Apple HomeKit (via Matter)
- Amazon Alexa
- Google Home
- Samsung SmartThings
- Home Assistant (fully local control)
- Shelly Smart Control app (iOS & Android)
- Custom integrations via REST API and webhooks
Professional Installation Features
Designed for easy installation by qualified electricians, the 2PM Gen4 features screw terminals supporting wire sizes from 0.2 to 2.5 mm² (24 to 14 AWG). The device requires a neutral wire connection and includes overvoltage protection. Its embedded web interface allows for configuration, monitoring, and firmware updates without relying on cloud services. The multi-button interface supports factory reset, mode switching between Matter and Zigbee, and easy pairing with home automation systems.
What's in the Box
- Shelly 2PM Gen4 smart relay switch
- User and safety guide
Full Specifications
Physical
| Dimensions (H × W × D) |
37 × 42 × 16 mm ±0.5 mm (1.46 × 1.65 × 0.63 inch) |
| Weight |
30 g (1.06 oz) |
| Shell Material |
Plastic |
| Mounting |
Behind wall switches, in junction boxes, or other limited-space locations |
Electrical
| Power Supply |
110-240V AC, 50/60 Hz |
| Max. Switching Current (AC) |
10A per channel, 16A total, 18A peak |
| Conductor Cross Section |
0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, bootlace) |
| Screw Terminal Max Torque |
0.4 Nm / 3.5 lbin |
Connectivity
| Wireless Protocols |
Wi-Fi (2.4 GHz, 802.11 b/g/n), Bluetooth, Zigbee, Matter |
| Network Modes |
Standalone local Wi-Fi or cloud-based operation |
| Platform Support |
Apple HomeKit (via Matter), Alexa, Google Home, SmartThings, Home Assistant, Shelly app |
| API |
REST API, webhooks, scripting support |
Features
| Channels |
2 independent relay outputs |
| Power Monitoring |
Per-channel real-time power measurement |
| Operating Modes |
Switch mode (independent channels) or Cover mode (unified bi-directional motor control) |
| Venetian Blind Support |
Yes, with slat angle control |
| Scheduling |
Time windows based on date, time, weekdays, hours, minutes, seconds |
| Virtual Components |
Supported for advanced automation |
| Obstacle Detection |
Yes (for cover/motor mode) |
Environmental
| Operating Temperature |
-10°C to +40°C (14°F to 104°F) |
| Humidity |
30% to 70% RH (non-condensing) |
Warranty & Compliance
| Warranty |
3 years (Shelly Gen4 devices) |
| Certifications |
CE, FCC, EU Directive 2014/53/EU, UL (UL-certified version available) |
Specifications are sourced from the manufacturer product page and may be updated.
