Converts 24 classical manual switches into BUS use for security and automation.

The 24-Z Dry Contact Input Module (G4) is a high-density digital input interface designed for building management systems (BMS), industrial automation, and smart control applications. It provides 24 independent dry contact input zones, enabling seamless monitoring of switches, push buttons, relays, limit switches, door contacts, motion sensors, and other potential-free devices.

Built on G4 (Generation 4) hardware, the module ensures fast response, noise immunity, and long-term reliability. Each input channel supports volt-free (dry) contact detection, making it ideal for integrating a wide range of field devices without external voltage interference.

With S-BUS communication, the module can be easily cascaded with other automation devices, reducing wiring complexity and improving scalability. Manual programming allows installers to configure zones quickly on-site, while LED status indicators provide real-time input feedback for troubleshooting and maintenance.

The 24-Z Dry Contact Input Module (G4) is a perfect choice for smart buildings, security systems, HVAC monitoring, access control, and industrial automation panels, delivering stable performance in demanding environments.

Key Features

• 24 independent dry contact input zones
• Supports NO/NC contact detection
• S-BUS enabled for seamless automation integration
• Manual programming for quick configuration
• Real-time LED indicators for each zone
• High noise immunity and stable signal processing
• DIN-rail (G4) mount for control panels
• Cascadable for large-scale installations
• USB upgradable firmware
• Industrial-grade design for continuous operation

Applications

• Building Management Systems (BMS)
• Smart lighting control panels
• Security and alarm systems
• Access control and door monitoring
• HVAC status and fault monitoring
• Fire alarm interface systems
• PLC and SCADA input expansion
• Industrial automation panels
• Hotel, hospital, and office automation
• Smart home and IoT control systems
• Relay and switch status monitoring
• Utility and energy management systems

Technical Specifications

Why Choose the 24-Z Dry Contact Input Module (G4)?

• High-density input monitoring in a compact module
• Ideal for large automation and security systems
• Supports wide range of dry contact devices
• Easy integration with PLC, BMS, and automation controllers
• Reliable, scalable, and low-maintenance
• Designed for professional and industrial use