1Highprecision VU meter head, pointers are sensitive and accurate in measurement. 2Embedded installation, simple and convenient, pay attention to the positive and negative poles to prevent shortcircuit damage when using. 3Easy to use, with highdefinition backlight, it can be used normally at night. 4The meter is installed vertically, and the pointer deflection direction is clockwise from left to right. 5The driver board supporting the level meter only supports the use of 5W60W power amplifiers, and is connected to the output of the power amplifier. Item Type: VU Meter Material: ABS Internal DC Impedance: 65010% Insulation Resistance: Above 50M Friction: 1mm Pointer Length: 21.51mm Pointer Width: 0.451mm Pointer Deflection Direction: Clockwise deflection from left to right Damping Time: 2-3 seconds Meter Installation Position: Vertical Backlight Power Supply: DC/AC 12V Test Environment: Temperature 20, Humidity 70% 1 x VU Meter1. The driver board supporting the level meter only supports the use of 5W60W power amplifier, connected to the output end of the power amplifier (that is, connected in parallel to the speaker)2. Please allow 12cm error due to manual measurement. Thanks for your understanding.3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.