Uxcell a13100900ux0307 Square Wave Signal Generator NE555 Pulse Module w LED Indicator 5-15V Product Name : NE555 Pulse Module; Voltage : DC 5V-15V Max. Output Current : 15mA (5V Power Supply )35mA (12V Power Supply);PCB Board Size : 3.5 x 3.3 x 1.4cm/1.4" x 1.3" x 0.55"(L*W*T) Materials : FR-4, PCB; Main Color : Green, Black, Blue Net Weight : 11g Package Content : 1 x NE555 Pulse Module