The Shelly Pro 4PM is a four-channel DIN-rail smart relay with power monitoring, multi-platform support, and secure local control for advanced home and commercial automation.
Product Description
The Shelly Pro 4PM is a professional-grade DIN-rail mounted smart relay switch with four channels and built-in power monitoring for each channel. Designed for advanced automation and energy management, it supports multiple connectivity options and operates securely without cloud dependency.
Key Features:
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Four independent relay channels with a total capacity of 40 A
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Built-in precise power monitoring per channel for real-time energy tracking
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Supports Wi-Fi, Ethernet, and Bluetooth connectivity for flexible integration
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Local and cloud-based control options with advanced scripting capabilities
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DIN-rail mountable with integrated LCD display for easy configuration and monitoring
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Enhanced safety with overvoltage, overpower, and over-temperature protection
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Works with smart home platforms via MQTT, REST, Modbus, and more
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No hub required; local automation with schedules, timers, and scenes
Form Factor
Attribute
Value
Description
Why It Matters
Height
10
Total standing height (cm)
Human-scale enables use of tools, navigation of spaces
Width
20
Shoulder-to-shoulder width (cm)
Affects balance, door/passage fit
Weight
52
Total mass (kg)
Impacts mobility, safety, power usage, transportability
Power System
Attribute
Value
Description
Why It Matters
Battery Type
Alkaline Battery
Li-ion / LiFePO4 / etc.
Determines energy density, safety
Battery Capacity
Wh or Ah
Impacts range and operating time
Operating Duration
Hours under normal load
Key for logistics, shift planning
Performance
Attribute
Value
Description
Why It Matters
Payload Capacity
Maximum carrying capacity (kg)
Determines real-world utility
Speed
Maximum operational speed
Task completion rate & productivity
Precision
Positioning accuracy (mm)
Quality of work & application suitability
Repeatability
Consistency of positioning (±mm)
Manufacturing quality & reliability
Cycle Time
Time per standard operation
Productivity & throughput calculations
MTBF
Mean Time Between Failures (hours)
Reliability & maintenance planning
Service Life
Expected operational lifespan (years)
ROI calculations & replacement planning
Connectivity
Attribute
Value
Description
Why It Matters
Communication Protocol
Wi-Fi / Ethernet / 5G / Bluetooth
Network integration capabilities
Remote Control
Web / App / Joystick / API
Needed for manual override or remote training
Programming Interface
Drag-drop / Code / Visual / Teach pendant
Ease of deployment and customization
Integration APIs
Available software interfaces
System integration capabilities
Cloud Connectivity
Cloud platform compatibility
Data analytics & remote monitoring
Security Features
Encryption & authentication methods
Cybersecurity compliance
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