you can almost always upgrade to a 40VA unit to provide more stable power for additional low-voltage accessories

The use of heavy-duty materials ensures superior corrosion resistance and structural integrity

Engineered for residential HVAC zoning and light commercial retrofits

positive engagement even under fluctuating voltage conditions

When system pressure exceeds the preset limit

Johnson Controls PSM19A24DAS Power Supply R-410A you can almost always upgradeThe Johnson Controls PSM19A24DAS is a heavy duty linear DC power supply engineered specifically for technical professionals managing building automation and HVAC control systems. This track mount isolated power supply accepts a standard 120 VAC input and delivers a highly stable, adjustable DC output ranging from 1. 5 to 28 VDC. For contractors working with sensitive microprocessors or control boards, the isolated design prevents electrical noise and