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Data Loggers and Sensors for monitoring indoor, outdoor and aquatic environments.

Relative humidity (RH) and...
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Relative humidity (RH) and temperature probe (SDI-12 output)

SRH1A
Sensor SRH1A offers ± 1.8% RH (at 25°C)  and  ± 0,2°C temp accuracy which places it among high quality products for high-standard meteorology use as well as environmental and industry measurements. The use of digital SDI-12 interface protocol makes the sensor easily compatible with wide range of data loggers.The housing of the sensor is made of POM – C,...
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Davis® 0.2 mm Rain Gauge... Davis® 0.2 mm Rain Gauge... 2
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Davis® 0.2 mm Rain Gauge Smart Sensor

Onset
S-RGF-M002
The Davis® Rain Gauge Smart Sensors features the new AeroCone® design, for better measurement accuracy in high-wind conditions. This gauge is made from UV-stabilized ABS plastic to provide a cost-effective sensor for rainfall measurement, and is plug-and-play compatible with all HOBO weather stations.Also available in a wireless model for use with the...
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Stevens SDX Pressure Sensor
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Stevens SDX Pressure Sensor

Onset
T-SDX-93720-xxx-xxx
The Stevens SDX (Submersible Depth Transmitter) is a high-accuracy water level/depth sensor that works with Onset’s HOBO® RX3000 cellular weather station to bring your water level data to the web. Suitable for a wide range of level monitoring applications, the SDX is a cost-effective option for remote, real-time water level data collection. It is...
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Davis® Wind Speed and... Davis® Wind Speed and... 2
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Davis® Wind Speed and Direction Smart Sensor

Onset
S-WCF-M003
Davis® Wind Speed/Direction Smart Sensors are compatible with all HOBO weather station loggers, HOBOware, and HOBOlink. They offer the same ease-of-use as existing Onset Smart Sensors, providing cost-effective HOBO weather stations for projects on a tight budget.  The sensors feature a plug-in modular connector for easy installation, and all configuration...
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HOBO MX2303 Two External... HOBO MX2303 Two External... 2
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HOBO MX2303 Two External Temperature Sensors Data Logger

Onset
MX2303
The HOBO MX2304 is a weatherproof data logger with one external temperature sensor. Leveraging Bluetooth Low Energy, the logger enables easy, fast set up and data download directly from your mobile device, and provides high-accuracy measurements in harsh outdoor environments.
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Bluetooth Low Energy Carbon... Bluetooth Low Energy Carbon... 2
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Bluetooth Low Energy Carbon Dioxide/Temp/RH Data Logger

Onset
MX1102A
Onset’s HOBO MX1102A CO2 logger makes it more convenient than ever to measure and record CO2 in buildings and other non-condensing environments. It measures CO2 from 0 – 5,000 parts per million (ppm) – and our free HOBOmobile app* allows you to access data right from your mobile phone or tablet within a 100-foot range.The MX1102A also features a USB port...
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EG4115 Core - 15 Input... EG4115 Core - 15 Input... 2
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EG4115 Core - 15 Input Meter Data Logger

Onset
EG4115
The EG4115 Core is a 15-channel energy meter with 0.5%  revenue-grade accuracy compliance and the ability to measure residential or commercial circuit panels, up to 3-phase 277/480VAC and 6900A. The meter has HomePlug AV powerline communication, an Ethernet port, and 2 USB ports for additional options, like WiFi. The embedded web server lets you connect...
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HOBO HOBOnet Soil Moisture... HOBO HOBOnet Soil Moisture... 2
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HOBO HOBOnet Soil Moisture 10HS Sensor

Onset
RXW-SMD-868
The HOBOnet Wireless Soil Moisture Sensor integrates the field-proven ECH2O™ 10HS Sensor and provides readings directly in volumetric water content. The 10cm probes measure soil moisture over a larger volume of soil, helping to average out any soil variability. The sensor's high-frequency design minimizes sensitivity to salinity and textural effects, and...
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HOBO Four External Channel... HOBO Four External Channel... 2
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HOBO Four External Channel Data Node (2 Analog and 2 Pulse)

Onset
ZW-008
The HOBO® ZW-008 is a 4-channel wireless data node featuring two analog ports and two pulse input ports. It wirelessly transmits data in real time, reducing the costs and inconvenience associated with manual data offload.
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Ultrasonic Wind Speed and... Ultrasonic Wind Speed and... 2
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Ultrasonic Wind Speed and Direction Smart Sensor

Onset
S-WCG-M003
The Ultrasonic Wind Speed and Direction Smart Sensor is compact and rugged with no moving parts. Because this sensor is ultrasonic it is able to measure very low wind speeds, down to 0.4 m/s (compared to 1.0 m/s for our mechanical sensors). As with all Onset smart sensors, this sensor is plug-and-play with HOBO stations (RX3000, USB Micro Station, H22,...
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No-lead Water Flow Meter...
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No-lead Water Flow Meter Sensor

Onset
T-MINOL-130-NL
Measure cold and hot water flow rates with this compact, affordable water meter. The small-sized T-MINOL-130-NL is designed for deployment in apartments, assisted living communities, and other commercial buildings. Please note, the T-MINOL is configured for use with 3/4" pipes. (Use step-ups or step-downs to deploy the T-MINOL with 1/2" or 1" pipe...
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New membrane covered...
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New membrane covered optical CO2 sensor for monitoring of the dissolved carbon dioxide...

T28ACO2
The measurement of dissolved carbon dioxide (excluding HCO3- and CO32-) in water is one of the mostimportant parameters for water monitoring. The T28ACO2 now a new membrane covered optical   CO2  sensor   with   titanium   housing   and   other   improved   characteristics.   So   the   new   T28ACO2 sensor is designed for depths of up to 1,000 m, has an...
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HOBO Bluetooth Low Energy... HOBO Bluetooth Low Energy... 2
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HOBO Bluetooth Low Energy Water Level Data Logger

Onset
MX2001
The HOBO® MX2001 is the industry’s first water level data logger designed for convenient wireless setup and download from mobile devices via Bluetooth Low Energy. The logger dramatically simplifies and lowers the cost of field data collection by providing wireless access to high-accuracy water level and temperature measurements right from a mobile phone...
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HOBO Pendant®... HOBO Pendant®... 2
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Light Intensity

HOBO Pendant® Temperature/Light 64K Data Logger

Onset
UA-002-64
This miniature data logger can record temperature and relative light levels. Complete with waterproof casing, this product is designed for indoor, outdoor, and underwater deployment. This model can store approximately 52,000 measurments of 10-bit readings.
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HOBOnet Soil Moisture EC-5... HOBOnet Soil Moisture EC-5... 2
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HOBOnet Soil Moisture EC-5 Sensor

Onset
RXW-SMC-868
The HOBOnet Wireless Soil Moisture Sensor integrates the field-proven ECH2O™ EC5 Sensor and provides readings directly in volumetric water content. The sensor's high-frequency design minimizes sensitivity to salinity and textural effects, and gives it a wide measurement range. HOBOnet Wireless Sensors communicate data directly to the RX3000 weather...
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12-Bit Temperature (17m...
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12-Bit Temperature (17m cable) Smart Sensor

Onset
S-TMB-M017
The 12-bit Temperature Smart Sensor provides < ± 0.2° C total accuracy and resolution of < ± 0.03° C over the range of from 0° to 50° C. The full measurement range is -40° to 100° C. A selectable measurement-averaging feature further improves accuracy. Reliable service is assured by a stainless steel sensor tip and robust cable rated for immersion...
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HOBO Temperature/Relative... HOBO Temperature/Relative... 2
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HOBO Temperature/Relative Humidity/2 External Channels Data Node

Onset
ZW-007
The HOBO® ZW-007 is an easy-to-deploy, 4-channel wireless data node. It includes an external 2m temperature/relative humidity sensor probe, and features two additional analog ports. It wirelessly transmits data in real time, reducing the costs and inconvenience associated with manual data offload.
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HOBOnet Solar Radiation... HOBOnet Solar Radiation... 2
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HOBOnet Solar Radiation (Silicon Pyranometer) Sensor

Onset
RXW-LIB-868
The HOBOnet Wireless Solar Radiation (Silicon Pyranometer) Sensor is calibrated to measure light intensity for frequencies relevant for solar radiation. HOBOnet Wireless Sensors communicate data directly to the RX3000 weather station or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and...
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HOBO Water Level Data... HOBO Water Level Data... 2
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HOBO Water Level Data Logger (0 - 4m)

Onset
U20-001-04
Monitor water levels and temperatures in wells, streams, lakes and wetlands (freshwater) with this 13-foot HOBO Water Level Data Logger. With its narrow range this logger provides the best accuracy in shallow waters. This logger offers a great value and easy deployment since there are no cumbersome vent tubes or desiccants to maintain. For saltwater...
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HOBO Motor On/Off Data... HOBO Motor On/Off Data... 2
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HOBO Motor On/Off Data Logger (84.650 measurements)

Onset
UX90-004
The HOBO Motor On/Off data logger records motor on and off conditions within an AC magnetic field with its internal sensor, or mechanical dry contact closures from external sensing devices. This data logger is ideal for tracking the usage & runtimes of motors, pumps, compressors, and other equipment. The HOBO UX90-004 Motor On/Off Data Logger is...
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HOBO Four-Channel Data Node... HOBO Four-Channel Data Node... 2
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HOBO Four-Channel Data Node (1 Temp, 1 RH, 1 Analog and 1 Pulse)

Onset
ZW-005
The HOBO® ZW-005 is an easy-to-deploy, 4-channel wireless temperature/relative humidity data node. It includes an external 2m temperature/relative humidity sensor probe, and features one analog port, and one pulse input port. It wirelessly transmits data in real time, reducing the costs and inconvenience associated with manual data offload.
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HOBOnet PAR Sensor HOBOnet PAR Sensor 2
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HOBOnet PAR Sensor

Onset
RXW-LIA-868
The HOBOnet Wireless Photosynthetic Active Radiation (PAR) Sensor measures light intensity for frequencies relevant to photosynthesis. HOBOnet Wireless Sensors communicate data directly to the RX3000 weather station or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and data is accessed...
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HOBO Motor On/Off Data... HOBO Motor On/Off Data... 2
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HOBO Motor On/Off Data Logger (346.795 measurements)

Onset
UX90-004M
The HOBO Motor On/Off data logger records motor on and off conditions within an AC magnetic field with its internal sensor, or mechanical dry contact closures from external sensing devices. This data logger is ideal for tracking the usage & runtimes of motors, pumps, compressors, and other equipment. The HOBO UX90-004 Motor On/Off Data Logger is...
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HOBO Water Level Data... HOBO Water Level Data... 2
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HOBO Water Level Data Logger (0 - 9m)

Onset
U20-001-01
Monitor water levels and temperatures in wells, streams, lakes and wetlands (freshwater) with this 13-foot HOBO Water Level Data Logger. With its narrow range this logger provides the best accuracy in shallow waters. This logger offers a great value and easy deployment since there are no cumbersome vent tubes or desiccants to maintain. For saltwater...
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