The Photoresistor Ambient Brightness Sensor HS-S20B is a highly efficient and environmentally friendly photoresistor ambient brightness sensor designed to replace traditional CdS photoresistors. Fully compliant with the RoHS directive (lead-free and cadmium-free), the HS-S20B sensor ensures safe, sustainable, and high-performance operation across a variety of light-sensitive applications.
This ambient brightness sensor features a specially developed filter epoxy resin package with a spectral response characteristic closely resembling that of the human eye. It delivers a linear output based on varying illumination levels and offers excellent temperature stability for consistent performance in diverse environments.
With its low dark current and low operating illuminance, the HS-S20B sensor is ideal for a wide range of light control circuits, such as ambient lighting control, display backlight adjustment, and light detection in devices like TVs, PDAs, cameras, LCD/LED screens, mobile phones, as well as toys and smart lighting systems.
Key Features of the Photoresistor Ambient Brightness Sensor HS-S20B
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RoHS compliant (lead-free and cadmium-free)
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Human eye-like spectral response for natural light detection
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Linear response to varying ambient illumination
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Low dark current and low operating illuminance
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Excellent temperature stability for reliable operation
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Durable epoxy resin packaging for long-term use
Typical Applications for the HS-S20B Sensor
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Automatic ambient lighting control for smart homes
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Backlight adjustment in TVs, cameras, LCD/LED displays, and mobile devices
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Ambient brightness detection for smartphones and wearable electronics
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Light-sensitive activation in toys, interactive devices, and decorative lighting
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Industrial and consumer electronics requiring precise light control
Schematic Diagram
Module Parameters
Pin Definitions
| Pin Name | Description |
|---|---|
| G | GND (Power input ground) |
| V | VCC (Power input positive) |
| S | Signal (Analog signal pin) |
Additional Specifications
- Supply Voltage: 3.3V / 5V
- Connection Method: 2.54mm pitch header
- Mounting Method: Dual screw fixing