http://frescohealth.com/product/fresco-hepa-filter/
http://californiawithkids.com/tag/with-kids/ 
ST-51A 5VDC 1 Amp Power Supply with Screw Terminal
- Primary: 100-240VAC 50/60Hz
- Secondary: 5VDC 1 Amp
- Two screw terminals
- Lightweight
- UL,cUL,FCC listed
- Individually boxed
