Description The item are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or mono-stable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the a-stable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. Features - Model: NE555P - Color: Mainly black - Material: durable hard plastic and metal. - and Highly Stable 555 Timers - Timing from microseconds to hours. - Adjustable duty cycle. - Capable of producing accurate time delays or oscillation. - Support astable or monostable operation.Package list: 1 x set of 12pcs NE555P Highly Straight DIP-8 Single Bipolar Timer