Atp manual ranging digital multimeter dm 830d atp dm 830d p the atp dm 830d is handy compact pocket sized 3 frac12 manual ranging digital multimeter it is ideal for use by electricians electronic engineers general industry and laboratories a single positive click action rotary selection switch provides ease of use the atp dm 830d offers multi function measurement capability and 220vrms overload protection note 10a range is un fused p atp manual ranging digital multimeter dm 830d