The ML-417 is available with or without a built-in cellular modem (LTE-m & NB-IoT) and in several editions. An ML-417ADS is equipped with (A)nalog, (D)igital and (S)erial inputs. For cost reduction an ML-417DS lacks the analog inputs and an ML-417AD the serial ones. All editions below are sharing about the same ML-417 main PCB, but differ depending on the chosen enclosure cover option. The cover can be a blind cover or a cover with integrated solar panel.

The different covers are giving the following ML-417 Editions:

ML-417DS-LI, ML-417AD-LI, ML-417ADS-LI
A D-Size 3.6V Lithium battery powered ML-417 with blind cover (Using a SAFT-LSH20 or GEBC-ER34615M battery is recommended)

This edition is best suitable for monitoring with longer log intervals >=1h and transfer intervals >=4h.

ML-417DS-3LI, ML-417AD-3LI, ML-417ADS-3LI
Same as above, but equipped with D-size holders to host up to 3 Lithium SAFT LSH20 batteries safely, with a combined lossless capacity of 39000mAh. Read more...

ML-417DS-PV, ML-417AD-PV, ML-417ADS-PV
An ML-417 with cover with integrated 1Wp tiny solar panel, charger and holder for one 26650 3.2V LiFePO4 battery. The battery is protected against damage by over charging and from damage by depletion by temporarily switching off the power to the data logger, giving the sun the chance to replenish the battery. Read more...

This edition is best suitable for monitoring with moderate log intervals >=5 min and transfer intervals >=15 min.

ML-417DS-LFP, ML-417AD-LFP, ML-417ADS-LFP
An ML-417 powered from 1 to 4 LiFePO4 18650 3.2V cells. The integrated charger can be used to charge the internal batteries from an external 36-cells 12Vnom/21Voc solar panel. Read more...

This edition is best suitable for applications with power hungry sensors for monitoring with low log intervals <5 min or transfer intervals <15 min.

ML-417DS-SLA, ML-417AD-SLA, ML-417ADS-SLA
An ML-417 to be powered from an external 12V Sealed Lead Acid/LiFePO4 battery, the integrated charger can be used to charge the 12V battery from an external 36-cells 12Vnom/21Voc solar panel. Read more...

This edition is best suitable for applications with power hungry sensors, sensors that require continuous power or for monitoring with fast transfer intervals <=5 min.

ML-417DS-DC, ML-417AD-DC, ML-417ADS-DC
An externally 8..28V DC powered ML-417 with blind cover.

This edition is best suitable when a reliable external DC source is easily available or for monitoring with low log intervals <5 min or transfer intervals <15 min.

ML-417DS-DC-LI, ML-417AD-DC-LI, ML-417ADS-DC-LI
As above but with a D-Size 3.6V Lithium back-up battery holder (Using a SAFT-LSH20 or GEBC-ER34615M battery is recommended).

This edition is best suitable when a external DC source is easily available but suffering from occasional outages.

ML-417DS-DC-NM, ML-417AD-DC-NM, ML-417ADS-DC-NM
An externally 8..28V DC powered ML-417 with blind cover and charging circuit for 3x AA NiMH (backup) batteries. The charging circuit protects the batteries from damage by over charging.

This edition is best suitable when a (non continues) external DC source is easily available or for monitoring with low log intervals <5 min or transfer intervals <15 min.

Tips: When using solar panels we recommend to use panels with a VOC of 17V or higher as well as panels not smaller than 3Wp. We also recommend to use LSD NiMH AA batteries with the highest capacity available (2600 mAh).

ML-417TFT-LFP/SLA/DC-(LI/NM)
As ML-417ADS-LFP/SLA/DC-(LI/NM), but with a cover with integrated 3.5" resistive touch color TFT display (320x240 pixels). The display is used for displaying actual values and historical data as graphs, its not meant for configuration purposes. Read more...

Note: The ML-417-TFT is not waterproof and not designed for outdoor use.