1. Model：KY-024， Working voltage: DC 5V.
2. Used to adjust the sensitivity of sensors and provide analog and digital outputs.
3. There are A3141 chipset, 3144 linear Hall effect sensor, LM393 double differential comparator, potentiometer, two LEDs, and six resistors. Compatible with Raspberry Pi, ESP8266, and other popular microcontrollers.
4. There are signal output instructions, single signal output, low-level effective signal output, sensitivity adjustable pure tone, field switching and signal output, circuit board output switch quantity (can be directly controlled by the microcontroller).
5. Suitable for temperature control, proximity switches, detection alarms or rotary encoders, various household appliances, etc.