Measurement functions: 1. Oscilloscope function, can measure frequency and amplitude 2. Spectrum analyzer function 3. Harmonic analysis function Measurement indicators: 1. Sampling rate: maximum 2Mbps, adjustable 2. Measurement frequency range: 10Hz-800KHz 3. Amplitude range: Amplitude range: 1mVpp-10Vpp; with automatic gear adjustment function or (*1;*2;*5;*10;*20;*50;*100;*200;AUT0 amplitude gear) 4. Phase resolution: 0.1 5. Harmonic analysis function, calculate 5th THD value, below 100KHz (The product appearance and printed words may vary depending on the batch, but this does not affect use) Color: red Material: Metal Package Contents: 1 x Signal Analyzer Kit 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.