Shelly 1PM Mini Gen4 Smart Relay Switch with Power Monitoring
The Shelly 1PM Mini Gen4 is an ultra-compact smart relay switch with built-in power monitoring, designed to give you full control and real-time energy tracking for lights and small appliances up to 8A. With support for Wi-Fi, Bluetooth, Zigbee, and Matter certification, you can integrate it into a wide range of smart home systems without needing a hub, including Home Assistant, Alexa, and Google Home. Built on the Gen4 platform, this device delivers multiprotocol connectivity, faster performance, lower latency, and enhanced security with TLS 1.2 encryption.
Why You'll Love the Shelly 1PM Mini Gen4
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Multiprotocol Connectivity: Choose from Wi-Fi, Zigbee, Bluetooth, or Matter for seamless integration with your smart home ecosystem
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Precise Power Monitoring: Real-time energy tracking with 1% accuracy and free cloud data storage for analysis and optimization
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Ultra-Compact Design: Measuring just 29 x 35 x 16 mm, it fits behind any existing wall switch or socket, even in the tightest spaces
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No Hub Required: Works standalone in your local Wi-Fi network or through cloud home automation services
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Advanced Automation: Supports scripting, MQTT, REST, web sockets, KNXnet/IP, and mjS scripting for custom features
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3-Year Warranty: Peace of mind with extended manufacturer warranty coverage
Transform Your Home into a Smart Home
The Shelly 1PM Mini Gen4 is perfectly suited for monitoring smaller devices including personal electronics, fans, lighting fixtures, and kitchen gadgets. Retrofit it into standard electrical wall boxes, behind power sockets and light switches, or even inside appliance casings. By monitoring power consumption, you can manage energy usage and make informed adjustments to reduce electricity costs. The device offers free data storage, providing access to historical data for analysis and comparison, helping you identify devices consuming excessive power or working unnecessarily.
Gen4 Platform Excellence
Built with an improved processor and 8 MB of memory, the Shelly 1PM Mini Gen4 delivers enhanced efficiency, responsiveness, and seamless operation compared to Gen3 models. The Zigbee functionality acts as a Zigbee range extender, whilst the Bluetooth connection can be used as a Bluetooth Gateway for Shelly BLU sensors. Each Mini Gen4 device is Matter-certified and supports multi-protocol connectivity, allowing greater flexibility within your smart home setup.
Remote Control & Automation
Access, control, and monitor your connected devices remotely from anywhere with internet connectivity via the Shelly Smart Control app. Create custom daily schedules based on your routine, or follow sunrise/sunset schedules for your lighting. Set custom scenes by combining the Shelly 1PM Mini Gen4 with your other Shelly devices for comprehensive home automation.
Universal Compatibility
Works seamlessly with popular smart home platforms and voice assistants:
- Amazon Alexa
- Google Home
- Home Assistant
- Apple HomeKit (via Matter)
- Samsung SmartThings
- Most MQTT-compatible platforms
What's in the Box
- Shelly 1PM Mini Gen4 smart relay switch
- User and safety guide
Full Specifications
General
| Device Model |
S4SW-001P8EU |
| Dimensions (H x W x L) |
29 x 35 x 16 mm ±0.5 mm (1.11 x 1.35 x 0.63 in) |
| Max Load |
8A at 240 VAC |
| Power Measurement Accuracy |
±1% |
Connectivity
| Wireless Protocols |
Wi-Fi, Bluetooth, Zigbee, Matter |
| Wi-Fi Range |
Up to 50m outdoors / 30m indoors (depending on construction) |
| Bluetooth Range |
Up to 30m outdoors / 10m indoors (depending on construction) |
| Bluetooth Model ID |
0x1031 |
Advanced Features
| Scripting Support |
mjS scripting, HTTPS, MQTTS |
| Communication Protocols |
REST, inbound/outbound web sockets, KNXnet/IP |
| Embedded Interface |
Web interface for monitoring and control |
| Schedules & Scenes |
Custom schedules, scenes, and local actions |
| Security |
TLS 1.2 encryption |
Power & Environment
| Input Voltage |
110-240 VAC, 50/60 Hz |
| External Protection |
10A circuit breaker, tripping characteristic B or C, 6kA interrupting rating |
| Processor |
Advanced Gen4 chipset with 8 MB memory |
Warranty
Specifications are sourced from the manufacturer product page and may be updated.