Bluetooth micro-logger

R7 250


The new Apogee microCache (µCache) is a ruggedized, battery-powered, Bluetooth Low Energy, single-sensor data-logging device that currently interfaces with Apogee’s quantum sensor line.

When used as a standalone field-logging device, the unit features enough memory to store 9 months of one-minute data using the internal battery. Data can be viewed on your mobile device using freely available Apogee Connect App software for iOS and Android devices.

Apogee Connect features live meter mode, real-time graphing, and the ability to send datasets to your computer via email.

It connects directly to several Apogee sensors and features live meter mode, stand-alone data logging, and graphing using our free Apogee Connect App for iOS and Android.

The new Apogee microCache (µCache) comes with complimentary AM-020 Apogee PVC Sensor Platform.



  • Live meter and datalogger modes
  • Stores and transmits real-time data to iOS and Android devices
  • View and download data with ApogeeConnect app for mobile devices
  • Programmable sampling and logging intervals
  • Large capacity: 9 months of 1 min data
  • High resolution 24-bit analog-to-digital converter
  • IP67 rated for harsh environments
  • Connects to multiple Apogee sensors.
  • Backed by an industry-leading 4-year warranty.


The free Apogee Connect app provides useful interfaces for several Apogee Sensors

Quantum Sensors: Measure DLI, Photoperiod, Peak Intensity

Shows real-time readings, graphs, and tables of photosynthetic photon flux density (PPFD), daily light integral (DLI), and photo period. Includes adjustable darkness offsets, an optional immersion correction factor, and custom sample averaging settings.

PAR-FAR and Red - Far-red Sensors: Measure PFD, PAR - FAR, Percent Far-red, Red - Far-red Ratio

App displays individual readings of PAR, Red, and Far-red, depending which sensor is connected. Displays real-time values and graphs and data-tables of recorded Photon Flux Density, PAR/Far-red, Percentage Far Red, the Red - Far-red ratio, Daily Light Integral, and Photoperiod.

Infrared Radiometers: Target Canopy Temperature

Shows instantaneous and logged target temperature, sensor body temperature, and allows input of custom calibration coefficients.

Pyranometers: Global Solar Radiation

Shows instantaneous and daily total of Global shortwave radiation. Can connect to upward and downward pyranometer models for albedometer readings.

More sensors coming soon!

Quick Start Guide

  1. Download Apogee Connect from the App Store or Google Play store
  2. Open App and hit the “+”
  3. Press the green button on µCache unit and hold for 3 seconds
  4. When µCache is recognized in the app, click on its name “uc###”
  5. Select the sensor model you are connecting
  6. Calibration: If directed to enter a custom calibration number, refer to the calibration sheet that came with the sensor. If the calibration number is already filled in, do not change this number
  7. Click “Add”
  8. Your sensor is now added and reading in real-time



Communication Protocol

  • Bluetooth® Low Energy (Bluetooth 4.0+)

Bluetooth Range

  • ~45 m (line-of-sight)

Data Logging Capability

  • Averaging Interval: 1-60 minutes; Sampling Interval: ≥ 1 second

Data Log Capacity

  • Over 400,000 Entries (~9 months at a 1-minute logging interval)

Time Accuracy

  • ± 30 seconds per month at 0° C ~ 70° C

Battery Type

  • 2/3 AA 3.6 Volt Lithium Battery (included)

Battery Life

  • ~1 year w/ 10-second sampling interval and an average of 5 minutes daily connected time; ~2 years w/ 60-second sampling interval and an average of 5 minutes daily connected time

Operating Environment

  • -40 to 85 C


  • 66 mm length, 50 mm width, 18 mm height

IP Rating

  • IP67

Connector Type

  • M8

Bluetooth Module

  • BMD-340 Contains FCC ID: 2AA9B10 IC: 12208A-10

ADC Resolution

  • 24 bits

Apogee Bluetooth connector

Product Video


Green Houston is an official distributor for all Apogee instruments in Africa, imported directly from the USA.

Please contact for all Apogee sensors and variants.

Please note: Apogee products are imported from the USA and due to the fluctuating exchange rate, prices are not fixed and may be subject to change. Requesting a quote before placing an order is highly recommended.