Shelly 2PM Gen4 (4 Pack)

Description

The Shelly 2PM Gen4 is the 2025 evolution of Shelly’s most popular dual-channel relay. While it maintains the core function of the Gen3 (controlling two lights or one motorized blind), the Gen4 upgrade focuses on radio flexibility, introducing native Zigbee 3.0 alongside Wi-Fi.

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This makes it a “chameleon” device: you can use it as a standard Wi-Fi relay today and switch it to a Zigbee-only device later if you decide to move away from Wi-Fi-based automation.

What’s New in Gen4?

The jump from Gen3 to Gen4 is primarily about the “Multi-protocol” internals:

• Zigbee 3.0 Support: For the first time, you can add this Shelly directly to Zigbee hubs (like Home Assistant via SkyConnect, Sonoff Dongles, or Amazon Echo hubs) without needing the Shelly Cloud. It also acts as a Zigbee Range Extender (Router) to strengthen your mesh network.
• Native Matter: While Gen3 was “Matter-ready,” Gen4 is Matter-certified out of the box, offering a smoother setup for Apple Home, Google Home, and Alexa users.
• Wi-Fi 6: It supports 802.11ax, which provides better stability and handles congested home networks much more efficiently.
• New CPU: Powered by the ESP-Shelly-C68F chip, featuring 8MB of flash and 512KB of RAM for faster local scripting and snappier response times.

Dual Mode: Lights or Covers

The 2PM Gen4 retains the two distinct operating modes that made its predecessors famous:

• Switch Mode (Dual Channel): Controls two independent light circuits or appliances (up to 10A each, 16A total). It monitors the power consumption for each channel separately.
• Cover Mode (Roller Shutter): Controls bi-directional AC motors for blinds, curtains, or awnings. It includes Slats Angle Control for Venetian blinds, allowing you to tilt the slats to precise percentages to manage sunlight.

Technical Specifications

Should you buy Gen3 or Gen4?

• Buy Gen4 if: You want to use Zigbee to reduce Wi-Fi clutter, or if you want the most “future-proof” device for Matter integration. It’s the better choice for professional installations and high-density smart homes.
• Stick with Gen3 if: You are on a budget and strictly use Wi-Fi. In terms of raw switching power and the Shelly App experience, the Gen3 and Gen4 feel very similar.

Note on Compatibility: Enabling Zigbee mode usually disables the device’s internal Wi-Fi Access Point and Bluetooth Gateway features to focus processing power on the Zigbee mesh.

Note: Whilst the Shelly configuration is mostly DIY, any electrical work must be done by a registered electrical contractor and we recommend Straton Electrical.