The radio module Huawei ME909s-120 is used in our RTUs.

Technical data

	Form factor	145-pin LGA
	Frequency bands	LTE (FDD): B1, B2, B3, B4, B5, B7, B8, B20 DC-HSPA+/HSPA+/HSPA/UMTS : B1,B2,B5,B8 EDGE/GPRS/GSM: 850/900/1800/1900 MHz
	Data transmission rate	DC-HSPA+ :Downlink:42 Mbps, Uplink: 5.76 Mbps LTE FDD: Downlink:150 Mbps, Uplink: 50 Mbps @Bandwidth 20M (CAT4)

Down below, you can find a short extract of sensors that can be connected to our transmission units.

Our RTU supports the following protocols:

•  SDI-12
•  Modbus
•  CAN-bus
•  RS485, RS232, RS422
•  Davis Instruments
•  Thies
•  Lambrecht

However, more protocols can be implemented upon request.

Our RTUs can be equipped with SIM cards of all network operators worldwide, maning that network operation in every country is possible as long as local coverage is available.

It is also possible to create so called "mixed networks" when using SIM cards of different providers in one country. When using so called "Global SIM's", you can profit from the services of over 350 mobile operators with just one SIM card. 

You can find a list of countries where services are available here.

No, the USB connector is only intended to supply the M717 with power or to connect the device to a PC for analytic purposes.

Currently, it is possible to upgrade sensors with Lufft firmware on demand. We can also support upgrades for other sensors if this possibility is already in place by the manufacturer.

Up to 50 sensors/values can be operated simultaneously.

The T707 device can work with either a Thies datalogger, a Davis console, a Lambrecht datalogger or up to 50 SDI-12 sensors. No concurrent use possible.

The M717 device can concurrently use either Thies and various SDI-12 sensors or Davis and various SDI-12 sensors.

Side note: The SDI-12 bus is capable of having at least 10 sensors connected to it, each with 200 feet (60 m) of cable. With fewer sensors, longer cable lengths are possible.

The Metrilog M2M Gateway is the central interface for all RTUs and for our customers. The remote units transmit sensor data collected (as a standard every 10 minutes) to the Metrilog M2M Gateway from where the data can be retrieved automatically by our customers.

The Metrilog M2M Gateway offers various APIs (Application Programming Interfaces) for easy data access:

Metrilog Instruments proprietary software for a small amount of stations that enables fast and easy access to graphically visualized sensor data. The program is based on Java and can be downloaded free of charge. 

Metrilog Replicate is a web service for systematic and automatic data retrieval from multiple sensors or other measuring devices. You can use your preferred programming language to create your own application and collect the data.

One RTU (M717) contains 3 megabyte of memory for data storage. This refers to approximately 500.000 readings (about 300 days) in standard applications. The length of time in which measured data can be stored depends on the amount of sensors attached to the stations respective data size.

Our RTUs are designed to work at extreme low-power mode. WiFi, Bluetooth and LAN are known to be quite power consuming, therefore those solutions were not selected.

Depending on location, sunshine duration and other environmental factors, the RTU can be operated with a solar panel all year long. The only restriction is that no heated or other sensors with high power consumption are used.

We assign an individual password for every individual customer to access the Metrilog M2M Gateway. Please contact us after purchasing the remote terminal unit and we will setup an account for you and while informing you about your access codes.

In general each RTU contains a SIM card. If you open one of our units without our consent, the factory guarantee will expire.

In case it is necessary to open the RTU and the SIM card gets lost, please inform us immediately so that we can terminate the contract to prevent malpractice. We will send you a new SIM card, for the replacement a flat sum of EUR 20,-- will be charged.

No. SIM cards are directly allocated to an RTU and can't simply be changed. When opening the RTU without our consent and removing the SIM card, any guarantee from our side automatically ends. For SIM card changes you need to contact us and we will be glad to guide you through this process.

No. SIM cards used by us are special M2M/IoT SIM cards. These cards are specially preconfigured by the operators and optimized for use in M2M or IoT devices (For example: enhanced security, extended temperature ranges, special M2M configurations).

Please contact us during office hours by phone +43 1 890 12 36 - 0 or mail.
We will gladly answer any questions regarding our system.