TOOGOO(R) Square Wave Signal Generator NE555 Pulse Module w LED Indicator 5-15V

*Square Wave Signal Generator NE555 Pulse Module w LED Indicator 5-15V
It is used as a square wave signal generator to enerate a square wave signal for experimental development use; For generating drive a stepper motor drive of the square wave signal; Adjustable pulse generated for the use of MCU; Generated adjustable pulse to control related circuit.
With output indicator: LED on when low level, LED off when high level, LED flashed when low frequency; Output levels of frequency range is selectable, which is benefit for output frequency is continuously adjustable; LF level: 1Hz~50Hz; IF level: 50Hz~1kHz; High frequency level: 1KHz~10kHz; HF level: 10kHz~200kHz