Keyestudio KS0436 Kit Manual page 260

Component Introduction:
IR Receiver:
Infrared receiver is a component with functions of reception,
amplification, and demodulation.
The internal IC has already been demodulated so that can directly
output digital signal.
Infrared receiver has 3 pins. When you use it, connect VOUT to Analog
pin, GND to GND, VCC to +5V.
Remote Controller:
Infrared remote control is composed of infrared
transmitting and infrared receiving systems.
That is, consist of an infrared remote control, an infrared
receiver module and a micro-controller that can decode.
You can refer to the figure below.
VCC
GND
VOUT
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