Keyes KY-018 Light sensor

Product detailed description

The Keyes KY-018 module is an analogue light sensor with a photoresistor (LDR), whose resistance decreases as light intensity increases. The output voltage on the signal pin changes proportionally to the ambient light, so an analogue input of a microcontroller is sufficient to read the value. The module is suitable for automatic lighting control, day and night detection, or as a simple light presence sensor in projects with Arduino or ESP32.

Specifications:

• Sensor type: photoresistor (LDR – Light Dependent Resistor)
• Power supply: 3.3 V – 5 V DC
• Output: analogue (voltage changes with light intensity)
• Resistance in dark: approx. 1 MΩ
• Resistance in light: approx. 8–20 kΩ (at 10 lux)
• Pins: 3 (S – analogue output, middle pin – VCC, – GND)
• Compatibility: Arduino, ESP32, Raspberry Pi and other microcontrollers with an analogue input (ADC)
• Dimensions: approx. 15 × 18 mm

Package contents:

• Keyes KY-018 Light Sensor - 1x

Note:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustration purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.