Multitester tested for voltage. This is an EQUIVALENT wall mount battery charger adapter voltage regulator, power supply, powersupply, inverter, adaptor for many Delta brand faucets. PLEASE NOTE: Round barrel connector with a positive center. Special heavy wrapping is provided to protect the prongs. S H in the contiguous USA is $6.(insured shipping). Please see other interesting items by JGrit. USPS DELIVERY TIME: As stated in the item listing, seller will drop-off your item to the USPS within 5 days of receiving cleared payment. How long it takes to deliver to your door is strictly within USPS control and not within the control of seller. Please leave 5 stars for seller 5 day drop-off time.