Multitester tested for voltage. This ADAPTER is a voltage EQUIVALENT version for the 15v-24v or 13VAC power supply unit for the Telex ST 200 Sound Mate base unit. Please check your device for power requirement. Photo is generic. Shape, size or color may differ from auction photo. 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 4 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 4 day drop-off time.