Shelly Plus 1PM Gen3 WiFi Smart Switch with Power Metering (Pair)

The SHELLY-PLUS-1PM-GEN3-2 is a sophisticated Wi-Fi relay module designed for professional and advanced DIY smart home installations. This third-generation device builds upon the proven Shelly platform, offering enhanced power monitoring capabilities and robust connectivity in a compact form factor. Engineered for seamless integration into existing electrical systems, it provides precise control and real-time energy consumption data for a single connected appliance or circuit, making it an ideal solution for energy management and automation projects.

Featuring a dual-voltage input design, the module supports a wide range of electrical configurations, accommodating both standard mains and lower voltage DC systems. Its improved processing power and memory ensure faster response times and greater reliability for automated routines. The device operates silently with no moving parts and maintains stable performance even in demanding environmental conditions, providing a dependable foundation for any smart infrastructure.

Technical Specifications

• Input Voltage: 110-240 V~ AC / 24-30 V⎓ DC
• Output Configuration: Single relay with integrated power monitoring
• Maximum Load: 16A resistive (3500W at 230V~)
• Wireless Connectivity: Dual-band Wi-Fi 2.4GHz & 5GHz
• Power Monitoring: Real-time measurement of voltage, current, power, and energy consumption
• Operating Temperature: -20°C to +60°C
• Enclosure Rating: IP20 for indoor use
• Dimensions: 42mm x 38mm x 17mm

Key Features

• Dual Power Supply: Flexible operation from either mains voltage or low-voltage DC sources
• Advanced Energy Monitoring: Precise measurement of electrical parameters with historical data logging
• Local Network Control: Operates independently of cloud services with local API access
• Overload Protection: Automatic shutdown upon detecting excessive current draw
• Thermal Management: Built-in temperature monitoring with automatic power reduction if overheating occurs
• Schedule Programming: Native support for timers and complex automation rules without external controllers
• Secure Integration: Supports encrypted communications and secure authentication protocols

Use Cases

This module is particularly suited for controlling and monitoring high-power appliances such as water heaters, air conditioning units, and industrial equipment. Its power monitoring capabilities make it valuable for energy auditing applications, allowing users to identify inefficient devices and optimise power consumption patterns. The dual-voltage support enables deployment in specialised installations including CCTV systems, access control mechanisms, and agricultural automation where both mains and low-voltage power sources may be present. For residential applications, it provides reliable control of garage doors, irrigation systems, and pool pumps while delivering detailed insights into their operational costs.