The signal generator is a device that provides electrical signals at a variety offrequencies, square wave, and output levels. It is used as a signal source or excitation source for testing. There are 2 modes supported.Normal Mode: Frequency range 1Hz~150KHz, duty cycle range 0.00%-100%. duty cycle accuracy 1%.Exact Mode: Frequency range 1Hz~15KHz, duty cycle range 0.00%-100%, duty cycle accuracy 0.1%.Work Voltage: DC 3.3V-30VFrequency Accuracy: 2%Duty Cycle Range: 0. 00%-100%Output Current: About 5-30mAOutput Amplitude: Same to input voltageWork Temperature: -104~185(-40~85)Work Humidity: 0%~95%RHParameter Setting:This product adjusts the frequency and duty cycle by rotating the potentiometer. It can realize rapid adjustment according to the rotation speed. By default, adjust the duty cycle. Short press the adjustment frequency, long press for 2 seconds to lock, and long press for 5 seconds to switch the mode (normal mode/exact mode). The operation is simple. After setting, the parameters are automatically saved and will not be lost in failure.The frequency is divided into 4 ranges and switched automatically.1. XXX: minimum unit 1Hz, value range 1Hz~999Hz.2. X.: minimum unit 0.01kHz, value range 1.00kHz~9.99kHz.3. .X: minimum unit 0.1kHz; value range 10.0kHz~99.9kHz.4. X.X.X: minimum unit 1kHz; value range 1kHz~150kHz.color:BlackMaterial:ABSsize:71 x 39mmPackage Contents:2 x Signal GeneratorOnly 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.