OUTPUT: 0.9 VDC to 10 VDC at full load of 50 mA. Mounts on a standard 2 gang electric box (supplied by others). MADE IN USA Used in existing installations with 220 VAC dimmers to control fixtures that are dimmable with 0-10V sinking signal. 0-10V dimmable fixtures need a separate 220 VAC constant line to power them.