IRF3315 (150V, 27A) 74174 USBASP AVR Programmer is a

USBASP AVR Programmer is a USB in-circuit programmer for Atmel AVR controllers

The lens used here is not really doing much and so we see that the two slots can 'see' out past some distance (basically the sensitivity of the sensor)

Built-in Bluetooth

Aerospace applications (pressure force distribution measurements)

The distance to be measured mainly depends on the speed of ultrasonic waves in space or air –which is a constant- and the flight time of the pulse

IRF3315 (150V, 27A) 74174 USBASP AVR Programmer is aIntroduction : IRF3315 MOSFET N Channel Transistor. Features : Type : Mosfet. Polarity : N Channel. Voltage : 150V. Current : 27A. Package : TO 220.