Applications: Greenhouse Management, Hydrology, Wireless Sensor Networks

Download Data Even From Remote Locations

You always want to know what's going on at your research site.  But figuring out how to communicate with your data logger is typically complicated and expensive.  The Em50G lets you check in on your data logger from virtually anywhere in the world.  The Em50G is a self-contained data logger built to power, read, and log data from five sensors. Logged data are transmitted from the logger to Decagon's server via internal cellular/mobile communication.  All Decagon sensors work with the Em50G; no programming is necessary.


Setting up the Em50G

Watch a two-minute video detailing the quick and easy Em50G set-up process

How it works

The standard Em50G uses an internal cell modem to automatically send data to an internet server four to six times a day (contact Decagon for more frequent data delivery options). The stored data are available for you to access, monitor, and download at any time.


Is My Site in a Coverage Area?

Decagon has over 120 cellular/mobile GSM partners all over the world.  To check and see if your site is covered, contact Decagon or your local representative with your site's lattitude and longitude.  If you're still not sure, you can demo an Em50G from Decagon and take it to your site to double check.


Plug in Sensors, Start Logging Data

The Em50G powers, reads, and logs data from five sensors. All Decagon sensors work with the Em50G; no programming is necessary.


Ready to Go

The Em50G generally takes about 20 minutes to set up. It comes complete with a data plan, and is both self-enclosed and self-powered. The logger case is rated NEMA 4X, IP45 for long-term outdoor use, and the logger will run (and power its sensors and the cell modem) for about six months on 5 AA batteries. For extended battery life try the Em50G Solar, which uses 5 AA NiMH batteries and a built in solar panel. 


Simple Setup

The Em50G has 5 sensor ports and one communication (download) port. Rather than having a screen and a keyboard, the Em50G is configured by plugging a laptop into its comm port. ECH2O Utility software (included) provides setup windows which name the logger, set the logger clock, select the type of sensor on each port, and specify how often you want the sensors read.


Easy Connectivity Check

See signal strength and connection quality in real time as you pick the best spot for your data logger. This feature lets you test connectivity at your measurement site BEFORE you install the logger.


Data Safeguards

Transmitted data is backed up in the data logger memory to give you an extra layer of data protection. A "confirm data transfer" protocol makes sure data transmission is correct and complete.


Stores 36,000 Data Scans

The Em50G stores over 36,000 data scans. A scan includes the date, time, and measurements from each of the five ports.

INPUT PORTS 5 channels, each supporting 12-bit analog, 32-bit digital, or pulse, compatible with any Decagon Devices sensor
PORT TYPE 3.5 mm "stereo jack" connector
DATA STORAGE 1 MB (36,000 scans of all 5 ports)
MEMORY TYPE Non-Volatile Flash
LOGGING INTERVAL 5 minutes to 24 hours, logged data is 1-minute average of user-specified interval
DATA TRANSMISSION FREQUENCY Up to six times/day.  Contact Decagon for options for more frequent data delivery.
OPERATING ENVIRONMENT -30° - 60°C, up to 100% RH
BATTERY CAPACITY 5 AA alkaline or lithium batteries
ENCLOSURE Weatherproof, impact and UV-resistant polymer
ENCLOSURE DIMENSIONS 12.7 cm x 20.3 cm x 5.1 cm (5 in x 8 in x 2 in)
ENCLOSURE ACCESS Hinged door with eyelet for securing with user-supplied padlock
MOUNTING 3.8 cm (1.5 inch) mast or wall mount
LOCAL COMMUNICATION Decagon Serial Cable Adaptor (SCA) or Decagon USB Cable Adaptor (UCA) (Proprietary cable only available through Decagon included.)

Data Plan: Annual, provided by Decagon Devices with 120 global partners, GSM service

Server Location: Decagon Devices; Pullman, Washington

Data Security: SSL/TLS encrypted data transfer; a unique Device ID and password (provided with each logger) are necessary for accessing data from the server.

CELLULAR FREQUENCIES Quad-band (850/900/1800/1900 MHz) GSM/GPRS for use worldwide.




Em5b 5 49KB (18,000 scans) Several months Impact-resistant IP52, NEMA 3R None
Em50 5 1MB (36,000 scans) 1 to 3 years Weatherproof, UV- and impact-resistant IP55, NEMA 3R None
Em50 Solar 5 1MB (36,000 scans) 2 to 3 years Weatherproof, UV- and impact-resistant IP55, NEMA 3R None
Em50G 5 1MB (36,000 scans) 6 months to a year Weatherproof, UV- and impact-resistant IP55, NEMA 3R GSM
Em50G Solar 5 1MB (36,000 scans) 2 to 3 years Weatherproof, UV- and impact-resistant IP55, NEMA 3R GSM