Features 1.This product is made of high quality ABS material, strong and durable. 2.After the power is applied, the output terminal outputs a square wave signal with an amplitude approximately equal to the power supply voltage. 3.The output frequency is adjustable, and the output voltage is stable during the adjustment of the frequency. 4.The adjustable frequency range is 20HZ-10KHZ, which can be selected according to the need (the frequency is allowed to have 10% deviation). If special frequency is required, the C1 capacitor needs to be replaced. 5.The frequency adjustment is adjusted by the multi-turn potentiometer. specificationFeatures:_x000D_ _x000D_ This product is made of high quality ABS material, strong and durable. _x000D_ After the power is applied, the output terminal outputs a square wave signal with an amplitude approximately equal to the power supply voltage. _x000D_ The output frequency is adjustable, and the output voltage is stable during the adjustment of the frequency. _x000D_ The adjustable frequency range is 20HZ-10KHZ, which can be selected according to the need (the frequency is allowed to have 10% deviation). If special frequency is required, the C1 capacitor needs to be replaced. _x000D_ The frequency adjustment is adjusted by the multi-turn potentiometer. _x000D_ _x000D_ _x000D_ s:_x000D_ Material: ABS_x000D_ Power Voltage: DC 5V-15V_x000D_ No-load current: Approx. 3mA_x000D_ Output drive current: 200mA Max_x000D_ Application: Used as a signal source in the circuit_x000D_ _x000D_ _x000D_ Package list:_x000D_ 1 x Pulse Output Adjustable Module_x000D_ _x000D_ _x000D_ Note:_x000D_ Application method:_x000D_ Connect to the power supply to work._x000D_ When in use, a 0.1uf power supply filter capacitor can be connected to the power supply to stabilize the operation._x000D_ Adjust the potentiometer clockwise, increase the frequency, adjust the potentiometer counterclockwise, reduce the frequency. PackageList