Ultrasonic Sensor Module HCSR04 NE556 DPDT (Double Pole Double Throw)

DPDT (Double Pole Double Throw) Rocker Switch is an electromechanical switch which is usually used to control forward and backward motion of a motor

AC Current 4A/115V AC

The BD139 is a NPN complementary low voltage NPN transistor in 3 pin Its package is TO-126

Rated AC Load Current 10A @240V AC

Ultrasonic Sensor Module HCSR04 NE556 DPDT (Double Pole Double Throw)This module operates on 5 V DC voltage and 15 mA current. The operating frequency for the sensor is 40 Hz. The minimum range of the module is 2 CM while its maximum range is 400 CM. Accuracy of the reading displayed by the module is 3 MM. 15 is the measuring angle covered by the sensor. This Ultrasonic sensor module has four pins i. e., Vcc, Trigger, Echo and Ground. At Vcc pin, 5 V DC is supplied to power up the sensor. Trigger pin is kept high for