Acuity Controls PP20 Power Pack with 20 Amp Relay, No Box Acuity Controls PP20 Power Pack with 20 Amp Relay, No Box Power Packs are the heart of the low voltage sensor system. The PP20 transforms 120, 240 or 277 volts to Class II 15 VDC to power the remote sensors. Utilizing our patented relay circuit protection, the PP20 also switches the lighting load on and off. This method has been tested to over 400,000 cycles at rated load! About Us Welcome to Help! Resale, your go-to consignment shop where value meets quality. At Help! Resale, we're dedicated to providing you with an exceptional shopping experience, whether you're looking to find the best deals or consign your gently used items. Help Resale 7200 Fair Oaks Blvd Ste 120 Carmichael CA 95608 Business Hours: Monday-Friday: 9:00 am to 5:30 pm (PST) All product and company names are trademarks TM or registered trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. (description exceeds maximum possible length)