Datalogger · IoT Gateway
yDoc ML-525 — Multipurpose IoT Datalogger
Connect any sensor. Communicate over any network. Deploy anywhere.
The yDoc ML-525 is built for one simple promise: connect any sensor, communicate over any network, deploy almost anywhere. It accepts analog (4–20 mA, 0–10 V, mV), digital, pulse and serial inputs, and speaks SDI-12, RS-232, RS-485 and Modbus RTU — so the same logger handles a borehole probe, a weather station, a radar level meter or a Modbus power meter without changing hardware.
Power it from a lithium battery, an external 7–30 V DC supply, or its built-in MPPT solar input — batteries last up to 10 years in low-duty applications. Send data over 4G/LTE-M, NB-IoT, Iridium satellite, LoRaWAN or Ethernet, with MQTT, HTTPS or FTP — directly into the Sensor-Online platform. Rugged IP67 housing rated from –40 °C to +70 °C means the same unit fits a remote hydrology station, a city air-quality cabinet, an agricultural field or an industrial tank farm.
Power options
Lithium battery, 7–30 V DC external supply, or built-in MPPT solar input. Up to 10 years on battery.
Communication
4G/LTE-M, NB-IoT, Iridium satellite, LoRaWAN and Ethernet. MQTT, HTTPS, FTP.
Physical inputs
Analog (4–20 mA, 0–10 V, mV), digital, SDI-12, RS-232/485, Modbus RTU, pulse counters.
Rugged design
IP67-rated, operating range –40 to +70 °C. Built for the field, the roadside and the rooftop.
Specifications
Technical details
Designed to be a universal datalogger — flexible, reliable and energy-efficient. Here are the details.
Power
- Internal batteryLithium 3.6 V
- External supply7–30 V DC
- Solar inputBuilt-in MPPT
- Battery lifeUp to 10 years
- Standby current< 100 µA
Communication
- Cellular4G/LTE-M, NB-IoT
- SatelliteIridium SBD
- LoRaWANClass A/C
- LocalEthernet, USB, BLE
- ProtocolsMQTT, HTTPS, FTP
Inputs & sensors
- Analog4–20 mA, 0–10 V, mV
- DigitalCounters, status
- SerialRS-232 / RS-485
- Sensor protocolsSDI-12, Modbus RTU
- ChannelsUp to 32
Sensor library
Sensors & applications
The yDoc ML-525 acts as the brain of your measurement station. Pick from our growing sensor library — grouped by application.
Weather Stations
Weather Stations for Agriculture & Environmental Monitoring
Complete weather stations measuring temperature, wind, precipitation, solar radiation and more — connected to the yDoc ML-525 for reliable remote monitoring.
Eleven Parameter Weather Station
All-in-one weather station measuring eleven parameters — temperature, humidity, wind, rain, solar radiation and more.
Wind Speed, Direction & Temperature
Ultrasonic wind sensor for wind speed, direction and temperature — no moving parts.
Tipping Bucket Rain Gauge
Tipping bucket rain gauge for accurate precipitation measurement in any weather station.
Air Temperature & Humidity (Shielded)
Air temperature and relative humidity with radiation shield for accurate field measurements.
Water Monitoring
Professional Water Quality Monitoring with yDoc ML-525
Measure level, pressure, quality and flow in groundwater, stormwater and surface water. The yDoc ML-525 handles both digital and analog water sensors.
Optical Dissolved Oxygen & Temperature
Optical DO sensor without membrane or electrolyte — minimal calibration and drift.
pH, ORP & Temperature
Industrial pH, ORP and temperature probe for long-term monitoring of surface and process water.
Optical Turbidity & Temperature
Optical turbidity meter for drinking water, surface water and wastewater per ISO 7027.
Pressure, Level, Temp & EC
High-precision multi-parameter probe for groundwater studies — pressure, level, temperature and conductivity.
Ultrasonic Distance / Level
Non-contact ultrasonic level sensor for tanks, wells and open channels.
Radar Distance / Level
Radar-based level measurement for demanding environments — unaffected by temperature, vapour or foam.
Pressure Probe G1/4''
Compact pressure and level probe with G1/4'' fitting for installation in pipes and tanks.
Air Quality
CO₂ and Air Quality Monitoring IoT System
Monitoring of CO₂, particulate matter (PM), VOC and indoor climate for buildings, schools and cities. Real-time data via the yDoc ML-525.
CO₂, Temp, Humidity & Barometric Pressure
Compact CO₂ sensor with temperature, humidity and pressure — perfect for indoor air quality.
Particulate Matter PM1/2.5/10
Optical particle counter for urban environments, construction sites and industrial air monitoring.
Indoor Climate (CO₂, TVOC, Motion)
Complete indoor sensor measuring air quality, occupancy and thermal comfort in one unit.
High-Precision Temp & Humidity
Lab-grade air temperature and humidity sensor with radiation shield for research and calibration.
IR Thermometer / Surface Temp
Non-contact infrared thermometer for surface temperature on roads, buildings or machinery.
Soil Monitoring
Precision Farming: Soil Monitoring with yDoc ML-525
Measure soil moisture, temperature, salinity and water potential at multiple depths. Optimize irrigation and give your crops exactly the right conditions.
Soil Moisture & Temperature (Profile)
Profile probe for soil moisture and temperature at multiple depths — installed in a single borehole.
Soil Moisture, Temp & Salinity (Profile)
Complete profile probe for moisture, temperature and salinity — for intensive agriculture and research.
Soil Moisture, Temp & EC (Point)
Point measurement sensor for volumetric water content, temperature and electrical conductivity.
Soil Water Potential & Temperature
Measure soil water (matric) potential — critical for understanding plant water availability.
Soil Temperature (Profile)
Temperature profile with multiple sensors at different depths — for agronomy, climate research and frost warning.
Plant Physiology
Advanced Plant Research – yDoc ML-525 for Universities
Measure plant response itself — stem growth, fruit size, sap flow, leaf wetness and temperature. For research, plant breeding and precision horticulture.
Dendrometer T-shape
T-shaped dendrometer for accurate measurement of stem growth and water status in trees and shrubs.
Stem Dendrometer
Stem dendrometer for long-term studies of growth and cyclic water dynamics in trees.
Fruit Dendrometer
Measure fruit size development in real time — for precision in fruit production and plant breeding.
Sap Flow Sensor
Measure sap flow rate in the stem — a direct indicator of plant water consumption.
Leaf Wetness Sensor
Detect dew formation and leaf wetness — critical for fungal disease models.
Leaf Temperature
Non-contact leaf temperature for stress detection and plant physiology studies.
Greenhouse Multi Monitor
Multi-sensor for greenhouses — temperature, humidity, light and CO₂ in one unit.
Meteorology (AWS)
Automatic Weather Station (AWS) Professional
Professional automatic weather stations (AWS) for meteorological services, road weather and hydrology. WMO-compatible measurements.
Professional AWS (11 parameters)
Complete professional weather station for WMO-compatible meteorology and hydrology.
Road Weather Station (RWIS)
High-precision road weather station for winter maintenance — road surface temperature, dew, ice.
Road Surface Temperature & Status
Road status and surface temperature sensor — for proactive road maintenance and salting.
Black Globe Temperature (WBGT)
Black globe sensor for heat stress index (WBGT) — occupational safety, sports events, agriculture.
FAQ
Frequently asked questions about the yDoc ML-525
What is the yDoc ML-525?+
What sensors are compatible with the yDoc ML-525?+
Which communication protocols does the yDoc ML-525 support?+
How long does the yDoc ML-525 battery last?+
Is the yDoc ML-525 suitable for outdoor use?+
Can the yDoc ML-525 connect to LoRaWAN?+
Does the yDoc ML-525 work with SDI-12 sensors?+
How is the yDoc ML-525 integrated with the Sensor-Online platform?+
Want to learn more about the yDoc ML-525?
Get in touch for a demo, pricing or technical advice on your specific application.