The 4-Zone Dry Input Module is a high-precision digital input interface designed to detect and monitor up to four separate dry contact signals. Perfect for integration into home automation, industrial control, and security systems, this module allows you to connect external switches, sensors, or relay outputs that do not supply voltage (dry contact), ensuring safe and efficient signal monitoring.

Each of the 4 input zones is opto-isolated for enhanced reliability and protection, making it ideal for noise-sensitive environments. Whether you're monitoring door contacts, push buttons, relay triggers, or sensor outputs, the 4-Zone Dry Input Module offers flexible and stable performance.

Compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and other microcontrollers, this module can be easily integrated into IoT-based monitoring systems for real-time feedback and automation triggers.

Key Features:

• Supports 4 independent dry contact inputs (NO/NC)
• Opto-isolated channels for high reliability and electrical safety
• Ideal for door sensors, push buttons, limit switches, and other passive devices
• 3.3V/5V logic level compatible
• LED indicators for input status monitoring
• Compact PCB design, easy to mount and integrate
• Ideal for use in BMS, fire alarm panels, intrusion systems, and smart home projects

Applications:

• Home automation input monitoring
• Security system zone detection
• Dry contact sensor interface
• Building management systems (BMS)
• Fire alarm and safety input module
• Industrial input sensing for machines or environments

Technical Specifications:

• Input Type: Dry contact (voltage-free)
• Input Channels: 4 zones
• Signal Type: NO/NC supported
• Input Voltage: Logic level (3.3V/5V compatible)
• Isolation: Opto-isolated channels
• Mounting: Screw terminals for easy wiring

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