Feature: 1. 1 CHANNEL OUTPUT: Square wave signal generator support 1 channel PWM output signal, adjustable frequency range from 1Hz to 150KHz 2. CLEAR LCD DISPLAY: Provide clearer display of frequency and duty cycle, bring high accuracy detection, with case protection 3. DUAL WORKING MODE: Support frequency adjustment and duty cycle adjustment. UART is supported, and support output 4. SUPPORT POWER OFF MEMORY FUNCTION: No need to set data after shutdown, the knob supports locking function to avoid misoperation 5. WIDER APPLICATION: Square wave signal generator can generate square wave signal for experimental development, control motor drive, generate adjustable pulse for MCU Dimmer, speed governor, etc. Specification: Item Type: Square Wave Signal Generator Size: Approx. 78 x 42 x 37mm / 3.07 x 1.65 x 1.46in Working Voltage: DC 3.3V-30V Frequency Range (normal mode): 1Hz~150KHz Frequency Range (accurate mode): 1Hz~15KHz Frequency Accuracy: 2% Duty Cycle Accuracy: 1% in normal mode Duty Cycle Accuracy: 0.1% in accurate mode Duty Cycle Range: 0.00%-100% Output Current: About 5-30mA Output Amplitude: Same as input voltage Operating Temperature: -160℉ ~ 190℉(-40℃~85℃) Working Humidity: 0%~95% relative humidity. Package List: 1 x Square Wave Signal Generator