ZL6 Basic Data Logger


ZL6 Basic Data Logger

Back to basics data logger

Everyone loves our ZL6 data logger paired with ZENTRA Cloud for easy access to near-real-time data from anywhere in the world. But if cost is more important than convenience, and you need an ultra-robust, entry-level data logger that is easy to set up and practically maintenance free, you’ll love the ZL6 Basic—a powerful, all-in-one solution that’s as effortless to set up as it is to use.

Low cost—high performance

The ZL6 Basic is a no-frills, self-contained data logger built to power, read, and log data from six plug and play sensors, which means no programming is necessary. With the ZL6 Basic data logger, you download data via Bluetooth to an app on your smartphone where it can be uploaded to the cloud. Or you can download data via USB. It works best for researchers who have no cell coverage or don’t need continuous data visualization

Uncomplicated. Almost unbreakable.

We engineered the ZL6 Basic to be extremely robust and low maintenance, so you can almost forget about your data logger completely. It’s powered by six alkaline batteries that last up to two years (1 year with ATMOS 41). An IP56-rated enclosure designed for shedding rain makes sure water doesn’t get in. And we’ve added fully round clasps and hinges that won’t break. Cable-free Bluetooth connect makes bringing your computer to the field an unhappy memory. Add on an optional cable security kit to ensure sensor cables don’t get yanked out. 

Plug sensors in and walk away

The ZL6 Basic requires little setup. Just plug sensors in and the logger starts storing hourly averages of sensor readings. Bluetooth makes it easy to check the settings ensuring everything is just right. It connects up to six METER sensors, so you can monitor different parameters, such as weather, soil moisture, and soil water potential, all at the same time, giving you deeper insight. 

Data—there when you need it

User-driven data storage on the cloud allows you to share data with everyone on the project. No more trying to chase down the person who downloaded the data on an unknown hard drive. For automatic data transfer to the cloud, use the ZL6 data logger.

A powerful workhorse that doesn’t quit

With the ZL6 Basic, you and your team can focus on data. Not distractions. Low-cost, robust, simple to set up, and easy-to-use, the ZL6 Basic data logger is a dependable workhorse that delivers year after year. It provides the critical data you need to understand the soil-plant-atmosphere continuum, so you’ll never miss an important insight.

Request a quote Contact us Compare all 3 ZL6 loggers


  • Ultra-rugged and durable construction
  • Download data via Bluetooth (shuttle data to ZENTRA Cloud via Bluetooth with ZENTRA Utility mobile, then download)
  • Plug and play with METER sensors
  • Six sensor ports
  • Low cost
  • Simple setup
  • Powered by six alkaline batteries that last up to two years (1 year with ATMOS 41)
  • Stores 20,000 to 30,000+ records depending on configuration
  • Best for researchers who have no cell coverage or don’t need continuous data visualization (See the ZL6 for viewing data on the go)
  • See a comparison of all 3 ZL6 loggers—>


View GSA details


Sensor logging interval

ZL6 Basic: 60 min (average or accumulation of 60, 1-min sensor readings)
ZL6 and ZL6 Pro: See comparison

Logger reporting interval

ZL6 Basic: None
ZL6 and ZL6 Pro: See comparison


ZL6 Basic: Synchronize with ZENTRA Utility or ZENTRA Utility Mobile
ZL6 and ZL6 Pro: See comparison


Computer communication

Standard USB cable, USB A to micro-USB B

Internet downloads

No built-in internet connectivity. Internet downloads are possible if using ZENTRA Utility Mobile to shuttle data

Cellular communications


Mobile communication

Bluetooth 5.2 supporting Bluetooth Low Energy protocol



Length: 14.9 cm (5.9 in)
Width: 6.3 cm (2.5 in)
Height: 25.0 cm (9.9 in)

Enclosure material

Weather-, impact-, and UV-resistant polymer

Enclosure rating


Enclosure access

Hinged door with latches and eyelets for lock or zip tie

Sensor input ports

6 (supports METER analog, digital, or pulse sensors)

Sensor port type

3.5-mm stereo plug connector

Memory type

Nonvolatile flash, full data retention with loss of power

Data storage

ZL6 Basic: 2 MB (20,000 to 30,000 records depending on configuration)
ZL6 and ZL6 Pro: See comparison

Battery capacity

ZL6 Basic: 6 AA alkaline batteries
ZL6 and ZL6 Pro: See comparison

Battery life

Alkaline: 3–12 months depending on configuration

Operating temperature range

Minimum: –40 °C
Maximum: +60 °C


Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)

California requires the following notice:

⚠️ WARNING: This product may contain chemicals including ethylene glycol, lead, nickel, styrene and cadmium, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov



Have a question? Our team is ready to help!

We manufacture, test, calibrate, and repair every instrument in-house. Our scientists and technicians use the instruments every day in our product testing lab. No matter what your question is, we have someone who can help you answer it.

Email: sales.environment@metergroup.com

Phone US: +1 509-332-5600
Phone Europe: +49 89 12 66 52 0

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