|  |

| |

Enabling better global research outcomes in soil, plant & environmental monitoring.


The ML-417 data logger is a small, ultra low power, cost effective data logger with built-in 4G cellular modem. This small data logger is further provided with an internal temperature sensor, 4GB micro SD card and a 2FF SIM card slot.


  • 2G/3G/4G Cellular Data Logger
  • 4GB Data Storage
  • Solar, Battery or DC Powered
  • 12V@200mA Sensor Excitation
  • Analog & Digital Inputs
  • Derived Inputs
  • RS232, R485 & SDI-12
  • TCP, FTP(S), HTTP(S), e-Mail, MQTT
  • CSV, TXT, JSON & JPG Files
  • Alarm Output & SMS
  • IP68, IP67 or IP54 Enclosure
  • Remote Configuration


  • Several option boards
  • Camera (JPG)
  • Iridium Satellite Modem
  • GPS Receiver

The ML-417 is available with several power options: 3.6V Lithium battery, 8 to 30V DC input, or integrated solar panel with 3x AA NiMH.

The data logger can acquire physical signals by 2 current loop inputs, 2 voltage inputs, 1 potentiometer input and 3 digital inputs. More or special inputs can be added by means of internal stackable option boards/converters.
The data logger is provided with one serial port to capture measurements from ASCII, MODBUS, NMEA or SDI-12 compatible sensors. External sensors can be powered by the data logger itself. Up to 8 mathematical channels are available to calculate meaningful engineering values derived from sensor input values (e.g. a polynomial to calculate a flow from a stream level). Supports up to 8 aggregation channels (e.g. to record 2 or 10 minute wind-speed averages sampled at 1Hz).
Logged data can be pushed to a central host by HTTP(S), FTP(S), e-mail, secure TCP or MQTT at configurable intervals and optionally by satellite as well (Iridium SBD).

The ML-x17 is available with 4 different cellular modems:
• ML-217: 2G Global
• ML-317: 3G Global with 2G fall-back
• ML-417: 4G Europe with 2G fall-back
• ML-N417: 4G North-America with 3G fall-back

When equipped with the integrated solar panel a complete self providing remote monitoring station can be arranged, all you need is the ML-417 and applicable sensor(s). This self providing cellular data logger is cost saving, because you don’t need: a) solar panels, b) big batteries, c) cellular modem and d) encapsulating cabinet.

Data Logging
Logging Interval 1 second to 1 day
Regular, alarm and independent intervals
Daily operation time bracket (e.g. 07:00AM to 20:00PM or 21:00PM – 06:00AM)
Data Storage 4GB MicroSD card for data and picture storage
Data Upload 1 minute to 1 day intervals
Regular and alarm intervals
Direct push on alarm raise and fall
Daily operation time bracket (e.g. 07:00AM to 20:00PM)
Data upload format Native TXT, JSON or CSV log files by HTTP(SSL/TLS), FTP (TLS Explicit), e-Mail (SMTP), secure TCP (AES-128) or MQTT
Picture upload JPG pictures by HTTP(S), FTP(S), e-Mail, TCP or MQTT
Satellite SBD messages by Iridium satellite modems (960x)
Alarms Alerts by SMS, e-Mail and MQTT
Open collector output (max. 100mA sink current)
Internal Sensors Battery (voltage and rest capacity)
Processor temperature
GSM signal strength
Analog Inputs 2x current loop inputs (0/4 to 20mA, 150 Ohm impedance)
2x voltage inputs (0 to 10V)
1x potentiometer input (max. 10M Ohm)
(12bit resolution & <0.1% FS accuracy)
Digital Inputs 3x state, pulse or counter (max. 10kHz) (0 to 5V)
Serial Input (1x RS-232, RS-485 or SDI-12)
SDI-12 (up to 15 devices, max 20 channels per device)
MODBUS RTU/ASCII (read registers from up to 15 slaves)
NMEA-0183 (standard and custom sentences)
ASCII (sensors autonomously outputting readable lines of numeric values)
Derived Inputs 8x calculation channels, using mathematical operators and functions (a/o cos, sin, atan2, ln, sqrt)
8x aggregation channels, logging minimums, maximums, averages, gusts and standard deviations sampled at 1Hz max.
Accessory Port (1x RS-232 & 5V excitation, to connect and power a GPS receiver, Iridium SBD modem, JPG camera or TFT-display)
Built-in cellular modem (4 different models) ML-217 2G (Quad-band GPRS)
ML-317: 3G (Penta-band & Quad-band GPRS fall-back)
ML-417: 4G EU (B1/B3/B7/B9/B20) & GPRS (900/1800)
ML-N417: 4G NA (B2/B4/B5/B12/B13) & 3G (850/1900)
Integrated GSM antenna, external GSM antenna optional
SIM card Not included, 2FF Mini (Class B) SIM card slot
Configuration USB (local) or secure TCP tunnel (remote)
Power consumption 100mA@3.6V average operating1 current during a duty cycle of less than 1 sec2 per log interval
250mA@3.6V average operating current during 20 to 60 second cellular communication
100uA@3.6V sleep current
12V@200mA excitation to power external sensors
Power supply (5 different covers) LI: 3.6V D-Size SAFT-LSH20 Lithium battery
3LI: 3x 3.6V D-Size SAFT-LSH20 Lithium battery
PV: 1Wp Integrated solar panel and 3x AA NiMH charger
DC/TFT: 8 to 30V DC input and 3x AA NiMH charger
Enclosure (5 different covers) (3)LI/DC: IP68 (30min@2m), 130x120x85mm, 460g
PV: IP67, 130x120x125mm, 530g
TFT: IP54, 130x120x85mm, 600g
UV stabilised polycarbonate
Operating range -30°C to +75°C


1 100mA if no external sensors need to be powered.

2 <1 sec. if external sensors are responsive and don’t require time to “warm up”.