Precise Light Sensing: Equipped with a 5516 photoresistor, this module accurately detects changes in ambient light intensity, functioning as a light-sensitive for electronic projects.Stable Digital Output: The LM393 voltage comparator ensures a clean digital output (0 or 1), reducing jitter and improving when interfacing with microcontrollers.The module provides a drive capacity exceeding 15mA, offering better performance than a standalone photoresistor.Adjustable Sensibility: An onboard potentiometer allows manual adjustment of the light detection threshold, enabling customization based on environmental conditions.Wide Compatibility: Operates within a voltage range of 3.3V to 5V, making it suitable for use with various development platforms such as ESP32, ESP8266, and others.Requires only three connections for. Technical Specifications Core: 5516 Photoresistor Chip: LM393 Voltage Comparator Operating Voltage: DC 3.3V - 5V Output: Digital Switch (LOW) Drive Capacity: > 15mA Detection Angle: ~60 degrees Connection Guide Wiring requires three connections: VCC to 3.3V or 5V on the control board GND to GND on the control board DO to any digital input pin (e.g., D2) Principle When ambient light falls below the set threshold, the DO pin outputs LOW (0).When light exceeds the threshold, the DO pin outputs (1). Application Examples - Night Light: Activates LED automatically in low-light conditions. - Balcony Garden : Turns on plant lights at night based on ambient darkness. - Camera Trigger: Initiates photo capture when a change in light is detected. - Weather Monitoring: Detects sunrise and sunset times. - Security System: Triggers an alert when a light beam is interrupted. Package Includes 5 x 5516 Light Detection Modules Disclaimer: This replacement is not affiliated with any manufacturer.Model references indicate fitment only.