Features Generate the square signal for driver the stepping motor Used as a square signal generator, generating square wave signal for experimental development 100% brand new and high qualit Generate adjustable pulse for use by MCU Generate adjustable pulse and control related circuits Specifications: Type: NE555 Pulse Module, NE555 PWM Module (Optional) Main chip: NE555 Input voltage: 5V-12VDC. Input current: ≥100MA Output amplitude: 4.2v v-pp to 11.4v v-pp (depending on the input voltage) Maximum output current: ≥15MA (5V power supply, v-pp >50%),35MA (12V power supply, V-PP> 50%) NE555 PWM Module Output duty ratio: 2-98% adjustable Weight:10-21g Package includes: 1 x NE555 Module Package List