The ZL6 is a stand-alone data logger unit that is low cost and easy to use.
It is a specialised data logger designed to support the METER Group range of sensors including TEROS, ATMOS and PHYTOS models.

Features:

No programming - simply connect sensors and you're done;
6 channels - measure and monitor a range of parameters by choosing up to six METER Group sensors;
Built-in battery and solar panel for easy power supply management;
Built-in modem for accessing data over the internet (add-on module);
Access data via ZENTRA Cloud online data management software; and
IP56, or NEMA 3R, environmental and weatherproof enclosure.

Specifications:

sensor input ports: 6 (supports METER analog, digital, or pulse sensors)
sensor port type: 3.5-mm stereo plug connector
logging interval: user defined between 5 minutes to 12 hours
reporting interval: Hourly with additional charges for more frequent reporting
data storage capacity: 8 MB (40,000 to 80,000+ records depending on configuration)
memory type: Nonvolatile flash, full data retention with loss of power
global position: Integrated 56-channel GPS/QZSS receiver
GPS position update: Daily (automatic) and on-demand (manual)
GPS position accuracy: ±3 m, with good sky view
time keeping: Synchronize automatically and on-demand; GPS system, cellular, or software
battery capacity: 6 AA NiMH or alkaline batteries
NiMH battery charging: Solar energy harvesting or USB
NiMH battery life: 3+ years with unobstructed view of sun
alkaline battery life: 3–12 months depending on configuration
computer communication: Standard USB cable, USB A to micro-B
cellular specifications: UMTS 3G 5-band cellular module with 2G fallback
mobile phone coverage: Telstra
internet downloads: SSL/TLS encrypted
enclosure: Weather-, impact-, and UV-resistant polymer
enclosure rating: IP56, NEMA 3R
enclosure dimensions: 14.9 cm × 25 cm × 6.3 cm
enclosure access & mounting: Hinged door with latches and eyelets for lock or zip tie
operating environment: –40 to +60 °C (0%–100% relative humidity)
compliance: Manufactured under ISO 9001:2015 EM ISO/IEC 17050:2010 (CE Mark)