July 7, 2019 By $12.50 9v Adapter allows you to power many of our meters from a standard (USA) power outlet, saving on battery costs. 9v AC Adapter quantity Add to cart Category: Accessories Description Description 9v Adapter allows you to power many of our meters from a standard (USA) power outlet, saving on battery costs. Fits the following products: DSP-523 MT-263 Loop-FSM Related products Hard Carrying Case $18.00 Add to cart