The 555 timer IC is an integrated circuit that is popular used in a variety of timer, pulse generation, and oscillator applications. This NE555 frequency adjustable pulse generator Module utilizes the NE555 timer IC to generate pulses from about 4Hz to 1.3Khz, which can be used for experimental development, or driving a stepper motor, it would be also a good choice for users learning&experiencing the analog RC circuits. Features: LED Output Indicator: Shows the output frequency clearly with LED light ON/OFF/Flashing Four optional frequency level: Low frequency (1-50Hz), Medium Frequency (50Hz-1kHz), Medium-high frequency (1kHz-10kHz), High frequency (10 kHz-200 kHz). Fine adjustable duty ratio: the duty ratio and frequency cannot be adjusted respectively, adjusting the duty cycle will change the frequency. Used as square wave generator for experimental development, motor driver, MCU pulse, circuit control. Application: As a square wave signal generator, generates a square wave signal used for experimental development Used to drive a stepper motor Generate adjustable pulse for MCU Generate adjustable pulse to control circuitry associated

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Item: Wave Signal Generator Chip: NE555 Input Voltage: DC 5~15V When power supply is 5V, the output current can be 15 MA around; when 12V power supply, the output current can be 35 MA around Input Current: ≥100mA Output Level: 4.2V V-PP~11.4V V-PP Output Current :≥15mA (When voltage is 5V, V-PP more than 50%); ≥35mA (When Voltage is 12V, V-PP more than 50%) Size: Approx. 32 X 23 X 15mm/1.26 X 0.91 X 0.59in. The output duty cycle can fine-tune; duty cycle and frequency is not separately adjustable; adjusting the duty cycle will change the frequency. When adjusting the duty cycle, the frequency also changes.