Wireless Light Sensor



Connects directly to your devices via Bluetooth® Smart and covers a wide range of applications.

This is the most versatile and most cost-effective light sensor we’ve ever produced with a variety of measurements for the science classroom that is unmatched.

The Wireless Light Sensor features two separate apertures – one for ambient measurements and one for directional light measurements.

The ambient sensor measures illuminance, UVA, UVB, and UV Index. The spot aperture measures the light level and has color detection with channels for the relative intensity of Red, Green, Blue light and the ability to sum them for the level of White light.

Also, PAR and irradiance are available as calculated measurements in PASCO Capstone (version 1.8 or later) and SPARKvue (version 2.6 or later) software.

Note:  The Wireless Light Sensor is not recommended for diffraction studies using our Optics Systems.  For that, we recommend our PASPORT High Sensitivity Light Sensor or ScienceWorkshop Light Sensor.

Typical Applications

Light measurements are key to the study of solar energy, modeling planetary motion, polarization, reflectivity, and the inverse square law.

  • Studying solar energy
  • Monitoring UV light levels and ways to limit exposure.
  • Reflection, absorption, and transmission of light through clear, opaque and different colored translucent mediums.
  • Investigating polarization and reflectivity
  • Modeling planetary motion
  • Verifying the inverse square law

Special Features

  • No interface needed! Connects directly to your computers, Chromebooks, tablets, and smartphones.
  • Simplicity: just pair and go, no cables and adapters to manage
  • Onboard memory allows the sensor to function as an independent datalogger.
  • Variable sampling rate for capturing small fast changes or experiments that run for hours, days, or weeks.
  • Features convenient Bluetooth wireless connectivity and long-lasting coin cell battery

Independent datalogging

Long term data collection directly on the sensor

In logging mode, wireless sensors collect data to their onboard memory for hours, days, weeks or even months at a time without needing to be connected to a computer, tablet, Chromebook or smartphone.

When the experiment is concluded, simply connect the sensor to a device running PASCO software and download all the measurements it recorded.

Product Specifications

Spectral Response 300 nm to 1100 nm
Illuminance Range* 0 to 131,000 lux
Irradiance Range* 0 to 1362 W/m²
PAR Range* 0 to 2400 μmol/m²/s
UV Index Range 0 to 12 (typical in daylight)
RGB and White Light Range 0 to 100%
Maximum Sample Rate 2 Hz (ambient); 20 Hz (spot)
Battery Coin cell
Bluetooth 4.0 Yes

Battery and Logging

Datalogging Yes
Stored Data Points Memory (Logging) 1 >15,000
Battery – Connected (Data Collection Mode) 2 >210 hr (2-3yrs of normal classroom use)
Battery – Logging (Data Logging Mode) 3 11 days
Battery Type Coin cell

1 Minimum # of data points with all measurements enabled, actual results depend on enabled measurements.

2 Continuous use in a connected state until battery failure, actual results will depend on sample rate, active measurements, and battery condition.

3 Logging until battery failure, actual results will depend on sample rate, active measurements, and battery condition.

* Normal classroom use is the sensor in active use for 20min/lab for 120 lab periods/yr.


Perform the following experiments and more with the Wireless Light Sensor.
Visit PASCO’s Experiment Library to view all activities for this product.

Light and Dark

In this lab, students use a light sensor to determine how light is related to what they see.

Investigating Seismic Waves

In this lab, students will use a light sensor to measure the amplitude and frequency of vibrations during three simulated earthquakes.

How a Greenhouse Works: Light

In this lab, students use a light sensor to determine how light or brightness depends on the angle at which the sun’s light strikes the surface of the ground and how this changes throughout the day.

Night and Day

In this lab, students use a light sensor to measure the light level that falls on a simulated earth’s surface as it turns through several rotations.


In this lab, students will use light and absolute pressure sensors to measure changes in light and pressure in an aquatic ecosystem as an Elodea or other aquatic plant undergoes photosynthesis.


In this lab, students will use light sensors to study the effects of polarization on light intensity and to explore Malus’ Law.

Supporting Documents

Wireless Light Sensor Manual English 536.18 KB
Sensing Element
  • Dual 5 channel radial photodiodes
Spectral Response
  • Approximately 300 nm to 1100 nm
Measurement Options
  • Light intensity, RGB, UVA, UVB, and UV index.
  • Approximately 0 – 130,000 lux
Sample rate
  • Ambient:
    Default: 1 Hz
  • Ambient:
    Maximum: 2 Hz
  • Spot:
    Default: 5 Hz
  • Spot:
    Maximum: 20 Hz
  • Yes
  • Coin Cell
  • Expected Battery Life > 1 year
  • Bluetooth® Smart
Max wireless range
  • 30 m (unobstructed)