Multitestor tested for voltage. This is a voltage EQUIVALENT powersupply to the Archer 273-1610, AT&T 1310/1510 and PhoneMate M/N-25 with Input: ac 120v and Output: ac 13V 800mA (aka: 13 volt AC 0.8 amp). Amperage can be higher, but never lower.Converter, voltage regulator, transformer, adapter has round barrel connector with a single hole. Please check your device for power requirements before looking. Shape, size or color may differ from product photo. Special heavy wrapping is provided to protect the prongs. S&H in the contiguous USA is $4.(insured shipping).Please see other interesting products by JGrit. USPS DELIVERY TIME: As stated in the item listing, seller will drop-off your item to the USPS within 4 days of receiving cleared payment. How long it takes to deliver to your door is strictlywithinUSPS control and not within the control of seller. Please leave 5 stars for seller 4 day drop-off time. Thankyou.