System Sensor D4P120 Power Board

The System Sensor D4P120 Power Board is a critical replacement component designed for the InnovairFlex D4120 duct smoke detector series. Engineered for professional-grade HVACR smoke detection, this 4-wire photoelectric power board supports multi-voltage inputs, including 24VAC/DC or 120VAC, providing flexibility for various field wiring requirements. As a low-flow duct smoke detector component, it is optimized to function in air velocities ranging from 100 to 4,000 feet per minute, ensuring reliable performance across diverse ventilation systems. This board serves as the primary interface for system power and control, featuring two DPDT Form-C relay contacts for auxiliary functions like fan shutdown or fire alarm panel integration. The 2:1 sensor-to-power capability allows a single D4P120 to monitor two separate D4S sensor heads simultaneously, making it an efficient solution for monitoring both supply and return air in a single system. Built with high-contrast terminal designations and short-circuit protection, this 4-wire duct smoke power board is purpose-built to withstand the rigorous demands of commercial fire safety installations.

• Versatile Power Options: Compatible with 24V or 120V circuits, eliminating the need for additional step-down transformers in common commercial retrofits.
• Interconnect Capability: Supports communication for up to 50 detectors, enabling a synchronized multi-fan shutdown strategy across large-scale HVAC zones.
• Maintenance Efficiency: Designed with transparent LED indicators for standby, alarm, maintenance, and trouble status, allowing for rapid diagnostics without opening the housing.
• Dual Sensor Support: Integrated 2:1 logic permits the monitoring of two remote sensors from one centralized power board location.
• Robust Protection: Features internal short-circuit protection to prevent board failure caused by accidental wiring errors during installation.

Can the D4P120 be used with older Innovair series detectors?
Yes, the InnovairFlex D4P120 is designed for backward compatibility with existing Innovair accessories, including remote test stations like the RTS2 and RTS151 series.

What is required to monitor both supply and return air on one board?
You will need to install two D4S sensor heads and wire them back to the 'Sensor 2' terminals on the D4P120. A DIP switch adjustment on the board is required to acknowledge the second sensor.

Does this board include the sampling tube?
No, this is the power board component only. Sampling tubes (DST series) and the D4S sensor head must be sourced separately based on the specific duct width of your application.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.