Shelly Pro 4PM Smart DIN Rail Switch

The Shelly Pro 4PM sets the highest standard for multi-circuit smart automation and energy analytics inside electrical enclosures. Engineered specifically for professional DIN rail setups, its most prominent physical feature is the built-in 1.8-inch color display on the front panel. This screen allows engineers and installers to verify relay statuses, track real-time power metrics, and check local network diagnostics directly at the breaker panel without opening a software client. Its integrated LAN (Ethernet) port ensures rock-solid, low-latency data communication by wire.

Equipped with 4 fully independent output channels, the Shelly Pro 4PM allows comprehensive centralization of lighting fields, wall sockets, or heavy appliance clusters from a single point. Backed by highly accurate individual power meters ("PM"), it tracks real-time electricity metrics for each independent line, serving as an invaluable tool for preventative appliance diagnostics and advanced load-shedding routines. It functions as an ultimate command unit for managing architectural lighting grids, underfloor heating manifolds, or commercial server environments.

Housed inside a durable, flame-retardant shell, the module continuously analyzes internal physical telemetry, automatically tripping connected loads within milliseconds if voltage surges, overcurrent, or dangerous thermal levels are detected. Out of the box, the Shelly Pro 4PM implements full support for local JavaScript scripting and MQTT protocols, ensuring reliable, high-tier interoperability with Home Assistant, Amazon Alexa, and Google Home setups.