Multitester tested for voltage. This a voltage EQUIVALENT power supply adapter used for some portable blood pressure machines with the following specs:  Input: AC 120V. Amperage can be higher, but never lower. Round barrel connector with POSITIVE center. Photo is generic. Shape, size or color may differ. Questions are encouraged.

S&H in the contiguous USA is $6. (insured shipping).

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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 time500ma2.1mm. Thankyou.