TR-77Ui - High Precision Wide Range Temperature and Humidity Data Logger

Measure and Record Temperature and Humidity in a Wider Range with Greater Accuracy
T&D's innovative technology provides higher precision measurements of temperature and humidity within an even wider range than ever before.

Humidity Measurement Range 0%RH to 99%RH
Temperature Measurement Range -30°C to 80°C
Humidity Measurement Resolution 0.1%RH
Humidity Measuring Accuracy 10 to 40°C: ±0.3°
At all other temperatures: ±0.5°C
Humidity Measuring Accuracy ±2.5%RH (25°C, 10%RH to 85%RH)
Humidity Sensor Response Time About 20 sec. (90% response)
Improved Sensor Durability
If the attached sensor becomes wet for a short time, it can still be used again by drying it quickly at room temperature.
If a not sufficiently dried sensor becomes wet again even for a short time, the sensor life may be adversely affected.
Extend Sensor Cable up to 10 Meters
By using the optional extension cables(*) it is possible to place the sensor up to 10 meters away from the TR-77Ui Unit.
*) Each TR-1C30 cable can extend the sensor by three meters. It is necessary to connect three TR-1C30 cables to extend the sensor up to ten meters.
Easy-to-Use USB Computer Connection
USB cable connection makes it a snap to connect a TR-77Ui Unit to your computer.
For computers with more than one USB port, it is possible to connect multiple TR-77Ui Units to one computer at the same time.
Large Logging Capacity: 8,000 Data Sets
One data set consists of readings for both temperature and humidity.
At the longest recording interval of 60 minutes, recording can continue for 1 year.
The battery life for a TR-77Ui Unit is about 10 months. In order to record measurements consecutively for 1 year, the battery should be periodically changed.
Battery life varies depending upon the type of battery, the battery performance, the measuring environment, and the frequency of communication.
Simultaneously View Multiple Channels of Data in Trend Graph
With our exclusive software, it is possible not only to monitor the current measurements, but also to view those measurements in a continually changing graph on your computer display at the same time.
Graphs can be opened for the same number of Units as are connected and can be viewed simultaneously.
Adjustment Function Equipped
By entering the adjustment values beforehand, it is possible to view and record the adjusted measurement values.
Adjustment values are written directly into the sensors themselves, not into the Units. Therefore, when replacing a sensor, it is necessary to re-set any desired adjustment settings into the newly connected sensor.
Slim, Lightweight and Compact
Our exclusive technology has allowed T&D to design and manufacture a high performance yet affordable and compact Unit (55 x 78 x 18mm, 62g).

The front of the Unit, which is smaller than a credit card, is compact yet easy-to-read.
10 Months of Operation with just 1 AA Alkaline Battery
Our special low energy consumption design gives you ten months of continuous operation with only one AA alkaline battery.

As the battery allows for measurement and recording over long periods of time there is no need to worry about where you place it; whether it is in transit or in a distant place.
Battery life varies depending upon the type of battery, the battery performance, the measuring environment, and the frequency of communication. The stated specifications are based on operations carried out with a new battery and are in no way a guarantee of your actual battery life.
Reliable Data Protection
With the reliable data protection function we have removed the worry about losing data when battery power becomes low.

When battery power is low:
When the battery power becomes low, a battery life warning signal will appear in the Unit's LCD display to show the low battery power status. If within a short time the battery is changed, measurement and recording will not be interrupted and there will be no data loss. If the battery power becomes even lower the Unit will automatically go into sleep mode. In sleep mode, measurement and recording will stop and protect recorded data until this point for the following 2 - 3 months.

When switch is off:
Even if the power has been turned off, the recorded data will be saved.
NOTE: If the battery is further left unchanged even after the Unit has entered sleep mode, or if the battery is left out of the Unit for some time, all recorded data will be lost.
If the battery is further left unchanged even after the Unit has entered sleep mode, or if the battery is left out of the Unit for some time, all recorded data will be lost.