The Resideo 1321-1 converts standard 120 VAC power to 16.5 VAC at 25 VA for compatible security alarm control panels. It is suitable for new installations or direct replacement where the manufacturer specifies this exact voltage and capacity.
Specifications
Input: 120 VAC, 60 Hz
Output: 16.5 VAC, 25 VA
Plug-in Class 2 transformer
UL listed
Model: 1321-1
Compatibility note: Match both output voltage and VA rating to the control panel documentation. Disconnect power before wiring, secure the transformer as required, and use professional installation where applicable.
