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Shelly Pro 4PM DIN Rail Smart Relay

Name: Shelly Shelly Pro 4PM DIN Rail Smart Relay
Brand: Shelly
SKU: shellyshellypro4pmdinrailsmartrelay
Rating: 4.6 (6 reviews)

Shelly Pro

Key Hardware & Protocol Features

4-Channel Switchboard Automation
Integrated Power Metering
LAN, Wi-Fi, and Bluetooth
Overpower and Overvoltage Protection

Verified Deep-Link Handoffs (Registry, Retail & Corporate)

Official CSA Certification Registry → Amazon Smart Home Store → Best Buy Availability → Compare Retailers (Google Shopping) → Corporate & Ticker (BSE: SLYG / XETRA: SLYG) →

Shelly Corporate DNA & Headquarters

Full Brand Portfolio (4.6/5) →

Parent Company Shelly Group AD

Headquarters Location Bulgaria

Corporate Structure Public (BSE: SLYG / XETRA: SLYG)

Ecosystem Strengths

Praised for robust local-first control, open APIs (MQTT, REST, WebSocket), reliable retrofit relays, active developer support, and seamless Matter/Home Assistant integration without requiring cloud lock-in.

Considerations

Installation often requires direct electrical wiring behind switch boxes, app user interface can feel complex to non-technical users, and compact enclosures can experience heat buildup under high loads.