Operating Voltage: 3.3~30V; Frequency Range: 1Hz~150KHz Frequency Accuracy: Approximately 2% accuracy for each range; Signal Load Capacity: Output current can be around 5~30mA Output Amplitude: PWM duty cycle value equals the power supply voltage; Ambient Temperature: -20~+70℃ Automatic Data Storage - all parameters are automatically saved after setting and are not lost when the power is turned off. Other Features: LCD display shows frequency and duty cycle values; includes housing; PWM output, frequency, and duty cycle can be independently adjusted via buttons; frequency value automatically switches in 4 levels with high accuracy. Color: As shown in the picture Material: Plastic Package Contents: 1 x Generator Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowable measurement error is +/- 1-3cm. Your satisfaction is our top priority. We will provide you with the best service. If you encounter any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide the best solution!