LDR Light Depend Sensor Module Made in India

The LDR Light Depend Sensor uses a CdS photoresistor (a light-sensitive resistor whose resistance drops when light hits it) to detect brightness changes. The ldr sensor arduino connection uses just four wires — VCC, GND, digital out, and analog out — making wiring quick for first projects. The onboard 10K ohm potentiometer sets the threshold where the digital output switches from HIGH to LOW, so you can calibrate the sensitivity without touching any code.

The ldr sensor module has a built-in comparator (a circuit that compares two voltages and outputs a logic level) that produces a clean digital signal even when the analog LDR output is noisy. The honest limitation is that CdS photoresistors respond slowly to rapid light changes — they are not fast enough for strobe or high-frequency light events. The ldr light dependent resistor module works with Arduino IDE and MicroPython and suits light-level detection tasks where slow ambient changes matter. StemVolt provides sensor with trusted quality, ensuring reliable performance and easy usability.

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Features:

• 10K ohm onboard potentiometer trims the digital output threshold for different lighting environments.
• Operating voltage of 3.3V to 5V DC connects safely to 3.3V and 5V microcontroller GPIO pins.
• 4-pin connector provides VCC, GND, digital output, and analog output on one compact module.
• light dependent sensor module operating range from minus 30°C to 70°C covers outdoor.

Technical specifications:

Applications:

• Automatic night light project uses this sensor to switch an LED on when the room goes dark.
• LDR Light Depend Sensor reads ambient light level and adjusts PWM brightness on an LCD backlight automatically.
• ldr made in india module detects darkness onset and sends a digital high signal to trigger a relay.

Package includes:

• 1 x LDR Light Depend Sensor Module