Name: LDR Light Sensor Module
SKU: VE-095
Price: 40.00 INR
Availability: InStock

LDR Light Sensor Module

Technical Specifications

Characteristic	Specification Parameters
Sensor Principle	Photoconductive Cadmium Sulfide (CdS) Resistance Shifts
Operating Voltage	3.3V to 5.0V DC (Fully logic-compatible)
Current Consumption	~15 mA (Ultra-low standby drain)
Comparator IC Type	LM393 Dual Differential Hardware Comparator
Spectral Peak Sensitivity	~540 nm (Closely matches human eye visibility)
Output Interfacing	Digital TTL (0V / 5V) and Analog Voltage (0V to VCC)

SKU: VE-095 Category: Sensors

The LDR Ambient Light Detection Sensor Module is a low-cost, highly responsive photosensitive peripheral used to measure variations in surrounding light levels. It couples a 5mm Light Dependent Resistor (photoresistor) with an onboard LM393 voltage comparator circuit. Operating on a photoconductivity principle, the LDR’s internal resistance drops sharply when exposed to brightness and rises exponentially in total darkness, allowing developers to automate systems based on day-and-night cycles.

✨ Key Features

Dual Signal Outputs: Generates a fast, logic-level digital switching threshold and a granular analog voltage curve simultaneously.
Onboard Sensitivity Control: Features an integrated multi-turn potentiometer trimmer to fine-tune the exact lux trigger point without changing code.
Instantaneous Response Time: Delivers high tracking speed, making it highly effective for rapid optical beam-break counters.
Visual Status Readouts: Outfitted with dual onboard LEDs providing immediate confirmation of incoming power and digital output activation

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Original price was: ₹50.00.Current price is: ₹40.00.

Characteristic	Specification Parameters
Sensor Principle	Photoconductive Cadmium Sulfide (CdS) Resistance Shifts
Operating Voltage	3.3V to 5.0V DC (Fully logic-compatible)
Current Consumption	~15 mA (Ultra-low standby drain)
Comparator IC Type	LM393 Dual Differential Hardware Comparator
Spectral Peak Sensitivity	~540 nm (Closely matches human eye visibility)
Output Interfacing	Digital TTL (0V / 5V) and Analog Voltage (0V to VCC)

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Pin Configuration: Industry-standard 3-Pin or 4-Pin layouts with clear PCB silk-screen markings (S for Signal, + or VCC for Power, - or GND for Ground).
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Parameter	Specification Details
Operating Frequency	13.56 MHz High-Frequency (HF)
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