Casstad VFD2517 Audio Spectrum Analyzer VFD Sound Level Meter VU Meter Screen Display for Spectrum Testing Instrument Tools Easy to Use

The spectrum of main landing speed, hold time, and descent speed can be adjusted individually.
Support 32Hz-20KHz precise frequency sweep, and make reasonable channel settings within the range of 10Hz-20KHz.
With smooth display and bottomless display mode, excellent AGC processing. Make the signal display richer.
Display flip function, 17-level brightness adjustment.
Using a professional constant current driver chip with blanking, the LED light has no problem with light and dark flickering.