Wireless Light Sensor - PS-3213


The PASCO Wireless Light Sensor streams data directly to your computers, Chromebooks, iPads, iPhones, or Android tablets or smartphones.


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.

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

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 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.

In addition 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
  • On board memory that 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

Bluetooth Low Energy Wireless Connectivity

Required Software:

PASCO products that use Bluetooth® Low Energy connectivity (wireless sensors, Smart Carts, and the AirLink) require the latest versions of our software.

PASCO Capstone is available for Mac and Windows. SPARKvue is available for Mac, Windows, iOS, Android and Chromebooks.

Additionally, the Wireless Motion Sensor and Wireless Smart Carts can be connected via Bluetooth and used with our MatchGraph app.

Compatibility/System Requirements

Any current model Chromebook, Mac, iPad, iPhone, Android tablet or phone will support direct connection to PASCO Bluetooth Low Energy devices. Also, any Windows 10 device with Creators Edition 1703 or later will support direct connection.

Chromebook users MUST have the latest firmware updates for ALL wireless sensors in order to use them without the USB Bluetooth Adapter. Full information.

All other Windows computers/tablets, older Macs, and Chromebooks without updated sensor firmware currently require the PS‑3500 USB Bluetooth Adapter to connect to PASCO’s Bluetooth Low Energy devices.

Full compatibility details are available, including compatibility information for older computing devices.


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.



New Storage Option

Simplify storage & inventory

Custom Gratnells Tray for Wireless Light Sensors (PS-3594)

The precision cut inserts are designed to accommodate up to 10 AirLink Interfaces and/or Wireless Light Sensors

See the buying guide below for details


Sensing Element
  • Dual 5 channel radial photodiodes
Spectral Response
  • Approximately 300 nm to 1100 nm
  • UVA (350 - 375 nm)
  • UVB (320 - 340 nm)
Measurement Options
  • Light intensity, RGB, UVA, UVB, and UV index.
  • ± 0.01 lx (spot aperture)
  • ±2 lx (ambient aperture);
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)

Measurements - Ambient Light Sensor

UVA (%)
  • Unitless
UVB (%)
  • Unitless
UV Index
  • 0 to 12 (typical in daylight)
  • Range 0 - 130,000 lux
  • Range: 0 to 2400 µmol/m2/s
  • Range: 0 to 1362 W/m2

* Based on solar radiance

Measurements - Spot Light Sensor

  • 0 to 100%
  • 0 to 100%
  • 0 to 100%
  • 0 to 100%

* Sum of normalized RGB peaks


Martin Horejsi reviewed the Wireless Light Sensor for NSTA Recommends: Technology,Science 2.0

A review from NSTA Recommends

"The Pasco Wireless Light Sensor is an excellent tool to teach science, and to do science. It’s tiny form factor and huge set of capabilities, but what makes it even more of a go-to solution is that the Pasco Wireless Light Sensor talks to smartphones putting a tremendous amount of science lab into a single pants pocket."

Read the full review

Buying Guide

USB Bluetooth Adapter

Windows devices, Chromebooks and older Macs lack native Bluetooth® Smart support and require an adapter to use PASCO wireless products.

All current model Macs, iPads, iPhones, Android tablets or phones support direct connection to PASCO Bluetooth Smart devices and do not require the adapter.

Full compatibility details are available.

USB Bluetooth Adapter   PS-3500
Coin Cell Battery Pack
Coin Cell Battery Pack   PS-3504

Software Required

SPARKvue software or PASCO Capstone software may be used. PASCO Capstone is available for Mac and Windows. SPARKvue is available for Mac, Windows, iOS, Android and Chromebooks.

Learn more about Bluetooth Compatibility.