Viking Electronics Viking Toll Restricter (vk-tr-1) -
Viking Electronics Viking Toll Restricter : Viking Toll RestricterTR 1 The TR 1 can block all operator assisted or 1 + dialing or up to 46 specific area codes or exchanges. The unit has a non volatile memory. No batteries or power supply required. A 1 to 50 minute call timer is provided. Comp??????
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{"Manufacturer": "Viking Electronics", "Date First Available": "April 23, 2012"}