Signal Generator XY-KPWM 1-Channel PWM Generator 1Hz-150kHz Dual Mode PWM Pulse Frequency Square Wave Signal Generator Module LCD Display 3.3-30V 5-30mA Pulse Frequency Generator with Shell sold2026 such as the 2nd

such as the 2nd

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There is air vent designed in the cover

or standing

Signal Generator XY-KPWM 1-Channel PWM Generator 1Hz-150kHz Dual Mode PWM Pulse Frequency Square Wave Signal Generator Module LCD Display 3.3-30V 5-30mA Pulse Frequency Generator with Shell sold2026 such as the 2ndSignal Generator XY KPWM 1 Channel PWM Generator 1Hz 150kHz Dual Mode PWM Pulse Frequency Square Wave Signal Generator Module LCD Display 3. 3 30V 5 30mA Pulse Frequency Generator with Shell Product Features XY KPWM Signal Generator has two working modes to choose from, the frequency range of the normal mode is 1Hz 150kHz, and the duty cycle is stepped by 1%; the fine mode frequency range is 1Hz 15kHz, and the duty cycle is stepped by 0. 1% PWM