[LED display] 1 meter 3 meters can measure voltage, current, frequency. The large Square LED 3 -bit display provides clear reading. [Specifications] Voltage: AC 60-500V; current: 0 ~ 100A; frequency: 20-75Hz; working temperature: -20 ~+60 C; accuracy category: ± 5 % [High -quality and easy to use] The lampshade of the indicator light has a good impact, and it is easy to operate and use it. You only need to pass the load cable through the current transformer. [Wide application] voltage table can be used as signal instructions for electricity, telecommunications, machine tools, machine tools, ships, textiles, printing and mining machinery. [Software package ] You get a 2 % 3 -in -1 voltage index. Colour:blue Material:plastic Package Contents: 2 x electrical tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.