Sharp IR Proximity and Range Finder Sensor (10-80 cm) Flame Sensor It has Four lead wires

It has Four lead wires which can be connected to  HX711 A/D Pressure Sensor

Two programmable time-of-day alarms and a programmable square-wave output are provided

GND - Ground

I2C and SPI serial interfaces

10-to-4 Line Priority Encoder

Sharp IR Proximity and Range Finder Sensor (10-80 cm) Flame Sensor It has Four lead wiresIntroduction : Sharp IR Proximity (GP2Y0A21YK0F) is an IR sensor useing infrared wave to measure distance. The output of the sensor is analog voltage, which can be read easily by microcontrollers ADC converter. This sensor can be used in industry and especially in robotics. The efficient range of this module is 10 to 80 cm. Infrared is sent out by the sensor which bounces off objects. The analog voltage that is returned determines how close the