Description
The Functional Devices PSMN24DAS is a compact DC power supply module designed for use in HVAC and building automation control applications. Engineered by Functional Devices — a trusted name in HVAC power and relay solutions — this unit delivers stable DC output power with the added convenience of an integrated on/off switch, making it easy to de-energize connected devices during commissioning, servicing, or troubleshooting without disconnecting wiring.
Key Features
- DC power supply output for HVAC and building automation controls
- Integrated on/off switch for convenient power management
- Compact module form factor for easy panel or enclosure mounting
- Designed for use with low-voltage HVAC control circuits
- Built to Functional Devices’ proven quality standards
Application
The PSMN24DAS is ideal for powering DC-operated sensors, controllers, and accessories commonly found in commercial and residential HVAC systems. The on/off switch provides a safe and simple means of isolating power to downstream devices without interrupting the primary power source, improving serviceability and system flexibility.
Why Choose Functional Devices?
Functional Devices has been a leading manufacturer of HVAC control components for decades, offering a wide range of power supplies, relays, and combination devices trusted by contractors and engineers across North America. The PSMN24DAS continues that tradition of reliable, field-ready performance.







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