KNACRO NE555 pulse generator Square Wave rectangular wave frequency dutycycle adjustable small signal generator Max. Output Current : 10mA (5V Power Supply ) 30mA (12V Power Supply); PCB Board Size :20 * 40mm Materials : FR-4, PCB;Main Color : Green, Black, Blue Input Current: 100ma Output Voltage: 4.2v-11.4v peak. With the power supply voltage variation