Shelly Plus i4 4-Input Digital Controller with DC Powering Support

The Shelly Plus i4 DC represents a sophisticated approach to smart home automation, providing four independent digital input channels for comprehensive device control within a Z-Wave network. This compact module operates as a versatile interface between traditional switches and modern smart systems, enabling users to convert conventional push-button operations into sophisticated automation commands. Designed for seamless integration into existing setups, the device bridges the gap between basic electrical controls and advanced home automation scenarios without requiring extensive modifications to existing wiring infrastructure. Operating within the robust Z-Wave ecosystem, this microprocessor-managed device communicates through a central gateway, allowing remote configuration and control via smartphones, tablets, or computer systems. The unit's design prioritises flexibility in installation, capable of being discreetly fitted behind existing switches or within standard wall consoles where space is often limited. Its ability to function alongside Z-Wave devices from various manufacturers ensures compatibility with diverse smart home environments while maintaining network reliability through its repeater functionality.

Technical Specifications

• Operating Voltage: 5-24 V DC
• Input Channels: 4 digital inputs (SW1, SW2, SW3, SW4)
• Communication Protocol: Z-Wave wireless technology
• Terminal Configuration: Positive (+), Ground (GND), and four switch input terminals
• Control Interface: Integrated S button for Z-Wave network management
• Installation Type: Retrofit design for standard wall consoles

Key Features

• Multi-Input Capability: Four independent digital inputs allow simultaneous control of multiple devices or scenes
• Z-Wave Network Integration: Seamlessly operates within existing Z-Wave ecosystems alongside devices from various manufacturers
• Compact Design: Space-efficient construction enables installation in confined spaces behind switches and wall consoles
• Scene Activation: Enables manual triggering of predefined automation scenes through switch or push-button inputs
• Network Compatibility: Supports backward compatibility with older Z-Wave device generations and gateways
• Centralised Control: Remote management capability through Z-Wave gateway connection

Use Cases

The device excels in residential and commercial automation scenarios where multiple control points are required. Typical applications include multi-zone lighting control systems, where different switches activate specific lighting scenes throughout a property. The four input channels prove particularly valuable in security system integration, allowing separate sensors or triggers to initiate distinct security protocols. Commercial environments benefit from its ability to manage multiple automated processes through conventional switch interfaces, while hospitality settings utilise the module for centralised room control systems. The retrofittable design makes it ideal for renovation projects where maintaining existing switch aesthetics while adding smart functionality is paramount.