ITEM NAME:630Ohm Analog Panel 500VU Audio Level Meter 6-12V Warm Back Light Description: High quality, cute appearance, stable and reliable performance, Display high precision and with backlight. dB : -20~+5dB 0dB=1.288V+/-10%, calibalated DCR= 650É Led Lamp voltage : 2.2~2.6V DCR= 650É, If=450uA Lamp : White LED x1pcs ,10~20mA Dimension : 36x34x34mm (WxHxD) View size : Æ34.0mm Specification: Material: Plastic Size: 36x34x34mm Package Includes: 1 Piece Audio Power Amplifier Panel VU Meter.Lamp : White LED x1pcs ,10~20mA. Size: 36x34x34mm. Material: Plastic.