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Five small green circuit boards with black light sensors and blue potentiometers

Goldendisk

Goldendisk Light Detection Digital Switch Sensor Module (5pcs)

SKU CH-Z1T6-SSMB4

Five light-detection modules output a digital high or low level when ambient brightness crosses an adjustable threshold

  • Light intensity detection for smart car projects
  • Digital output switches high when light falls below threshold
  • Adjustable sensitivity via on-board potentiometer
  • Direct microcontroller interface with high/low level signals
  • Relay-driver capability creates light-operated switch

Light Detection Sensor Module

The Goldendisk Light Detection Digital Switch Sensor Module is a photosensitive component designed for ambient brightness detection. It provides a digital output that changes state based on a configurable light intensity threshold. The module is compatible with Arduino microcontrollers for direct logic-level interfacing. This pack contains five individual sensor modules for multiple project deployments.

Threshold-Based Digital Output

The module outputs a high level on the DO pin when ambient light intensity falls below the set threshold. When light intensity exceeds the threshold, the output switches to a low level. This digital signal connects directly to a microcontroller input pin for simple state detection. The output can also drive a relay module to create a light-operated switch without additional circuitry.

Arduino-Compatible Light Sensing

This pack suits hobbyists and students building light-sensitive triggers, smart car sensors, or automated switching projects using Arduino platforms. It is not intended for applications requiring analog light intensity measurement or precise lux calibration. Builders needing continuous voltage output proportional to brightness should consider alternative sensor types. The digital-only interface limits use in graduated control systems.

How it compares

Measured against everything we stock in Sensors, Transducers & Thermometers, at today’s prices. Recalculated every night.

Price $28.99
Cheaper than about 59% of the 255 comparable items (median $39.99).

Specifications

No published specifications for this item yet.

Questions about this item

What voltage and pin spacing does the module need to connect to an Arduino?

The module is designed for direct connection to an Arduino microcontroller. It provides a digital DO output pin that swings high when ambient light is below the set threshold and low when above it, plus VCC and GND pins for power.

How do I set the light-level threshold on the module?

Adjust the onboard potentiometer until the DO output toggles at the desired brightness; turning it clockwise typically raises the threshold so the output stays high in darker conditions.

Which component will degrade first and need replacement?

The onboard photoresistor (LDR) is the primary light-sensitive element; its resistance range can drift after prolonged UV exposure, so the module itself would eventually need replacing.

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