MicroLoggers by HortPlus: Guarantee the Quality & Freshness of your Produce.

HortPlus MicroLoggers are small and discrete, cost-effective, robust and easy-to-use digital thermometers that measure and store time, temperature and humidity in their immediate environment. They're primarily used to monitor air and soil temperatures on orchards and vineyards, but they're also popular with research and education institutes.

MicroLoggers are also used for logging the temperature and humidity of products in storage or cold chain distribution. They can be used over and over again up to one million readings, and although their warranty is for one year, under normal operating conditions they can last for 5-10 years.

Their stainless-steel outer casing is highly resistant to environmental hazards such as dirt, light, shock and short periods of moisture. A plastic clip is available that can attach loggers to objects like containers, pallets and bags. And a waterproof capsule can be used if being exposed to wet environments. For outdoor use, our stevenson radiation screens provide protection from inaccurate readings through the effects of radiational heating.

The applications are virtually limitless:

  • Track temperatures of product in transit. Monitor the performance of your transport operators.

  • Cool chain and curing management.

  • Coolstore monitoring including kiwifruit storage.

  • Compost temperature monitoring.

  • Growing Degree Days and Winter Chilling affecting crop and disease management.

  • Frost monitoring and management.

  • Soil temperature monitoring.

  • Anywhere you need a record of temperature to support claims or enhance management.



  • Log product temperature in cool storage

  • Cool chain and curing management

  • Measure GDD and chilling units

  • Frost logging and management

  • Soil and compost temperature monitoring

  • Record temperature as support for claims

  • Insurance for the reputation of your produce


  • Small and discrete at 6mm x 17mm

  • Fits inside bins, cartons, containers, pallet cards

  • Cost effective, robust and hard-wearing

  • Measure temperatures -40°C to 80°C

  • 5-10 year battery life

  • Can be set to +/- 0.1ºC or 0.5ºC increments

  • Traceability with unique registration number

  • Delay mission start

  • Set mission logging interval (1 to 255 minutes)

  • Stores from 2048 to 8192 readings in memory

  • Choose what to do when the memory is full, stop or rollover.

  • Automatically graphs the data or export to excel

Buy HortPlus MicroLoggers & Starter Kits

See full product list here ▸

Popular Products:

Regular Starter Kit

5 x Temperature MicroLoggers (Z or G)
5 x Plastic Mounting Clip
1 x HortPlus MicroLogger Software
1 x MicroLogger PC Reader
1 x USB or Serial PC Adapter

Add To Cart
T Model Temperature MicroLogger

temperature range: -40°C to 85°C
humidity range: N/A
temperature accuracy: ±0.5°C (SC)
temperature resolution: 0.5°C or 0.0625°C
humidity resolution: N/A
data memory: 8192 bytes

loose (mounting clip not included)

Add To Cart
Outdoor Starter Kit

2 x Temperature MicroLoggers (Z or G)
2 x Plastic Mounting Clip
2 x Radiation (Stevenson) Screens
1 x HortPlus MicroLogger Software
1 x MicroLogger PC Reader
1 x USB or Serial PC Adapter

Add To Cart
Z Model Temperature MicroLogger

temperature range: -5°C to 26°C
humidity range: N/A
temperature accuracy: ±1°C
temperature resolution: 0.125°C
humidity resolution: N/A
data memory: 2048 bytes

loose (mounting clip not included)

Add To Cart


If you would like a quote for bulk orders please email us with your order ( ).

Payment and Shipping

Your order will be shipped as soon as we receive your payment in full. Domestic and international orders will be shipped via NZ Post or NZ Couriers at our discretion.

If you would like to pay for your order via bank transfer or cheque please contact us via email with your order ( ).

Returns Policy

HortPlus stands behind its products. If you are not happy, we are not happy!

If a product is defective we will either replace it or refund the purchase price at your direction.

If for any other reason you are not entirely happy with your purchase and you would like to return it for full refund within 30 days of receipt, call us first then return the software, hardware, and any accompanying materials. For a full refund to be available any hardware must be returned in the same condition in which it was shipped to you. 

Note that demo units are available for most of our products.