Note: This electrical tester can not be used for 110/220V systems, it is only used for DC 6-24V systems. Do not use on AC voltage Specification: Operation voltage: 6-24V DC Overload protection: 7A (When the current exceeds 7A, this item will disconnect the current automatically.) Weight: 334g Cable length: 4m/13.12ft Item Length: 225mm/8.86inch Item Width: 30mm/1.18inch Package size: 260 x 100 x 40mm/10.24 x 3.94 x 1.57inch