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Onset Pendant® MX2202 Temperature/Lilght Data Logger with Bluetooth Communications

Onset HOBO® Bluetooth Pendant Light and Temperature Data Logger

Part Number: MX2202

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  • Internal Sensors for Temperature and Light Measurements in an Indoor, Outdoor and Underwater Environment

  • Wireless Transmission of Recorded Readings to Phone or Tablet Using Bluetooth Smart LE Communications (in Air)

  • -20°C to 70°C (Air) or -20°C to 70°C (Water) Measurement Ranges with a +/-0.5°C Accuracy

  • 0 to 167,731 lux Measurement Range with a +/-10% Accuracy Typical for Direct Sunlight

  • Waterproof to 30 Meters (100 ft)

  • User-Replaceable Lithium Battery with 1 Year Typical Life (1 Minute Sampling Rate)

  • Stores up to 96,000 Measured Readings with Date/Time Stamp if Bluetooth Communications Not Available

HOBOmobile App Available on the Apple Store (iOS) and Google Play (Android)


  • Answer:

    This logger will only give you light level values in lux.  It is not a Photosynthetically Active Radiation (PAR) sensor.

    This same company does make a PAR sensor that is designed to be used with their weather station loggers however it is not designed for use under water.

    Here is a link to it: https://www.microdaq.com/onset-hobo-par-light-sensor.php

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  • Answer:

    I'm afraid that this product isn't sensitive enough to work well for that application.  To accurately measure levels that low I'm thinking you will need to most likely look for a high accuracy light sensor and not one that is built into a data logger.  Most sensors have a scalable output that you can run into a data logger so you can still record your levels.

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  • Answer:

    This logger records light levels in Lux and has a range of 0 to 167,731 lux.  The typical accuracy in direct sunlight is +/-10%.

    As long as these values work for your needs the logger would be fine for your application. 

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  • Answer:

    At this time this product doesn't have that capability.  The wireless connectivity of this product is intended only as a way to configure the logger and download data without having to use an interface.

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