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1. Remove the screws and open the cover.
   Make sure to use the proper size and type of screwdriver. (Phillips head #1 screwdriver is recommended.)

2. Insert the included battery.
   Do not remove the battery from its tube casing.

3. For TR41 and TR42: A rubber packing is provided inside the cover. Check the rubber packing for any cuts or scratches and close the cover as it was when opened.
   Dust or defects on the packing can adversely affect the waterproof capacity; in this case, remove the dust or replace the packing if it is damaged.

Notes about Changing the Battery

• Before replacing a battery, please make sure to download any necessary data from the logger using the mobile app, and proceed with changing the battery.
• Although the logger continues to work for a period after the battery has been removed, leaving the device without a battery until the LCD display goes blank will cause all recorded data in the unit to be lost. Device settings such as the device name and recording interval will not be lost.
• If + (plus) and – (minus) are mistaken, or if the battery terminals + and – are shorted, all recorded data stored in the logger will be lost.
• While batteries are removed, communication with a smartphone/tablet is not possible.
• If a new battery has been installed and nothing appears in the display, please remove and reinsert the battery.
• When inserting a battery, make sure no water or foreign objects get inside the case.
• Be sure to completely close the cover, but do not over tighten the screws. (Appropriate Tightening Torque: 20N･cm to 30N･cm (2Kgf･cm to 3Kgf･cm))

For Use in High/Low Temperature Environment

• Use in high and low temperature environments will result in a shortening of the battery life.
  60°C : one half of life compared to normal temperatures
  −20°C : one half of life compared to normal temperatures
  −30°C : one third of life compared to normal temperatures
• Although under normal temperature environments the [] mark may not appear, it may still become impossible to carry out communication in low temperatures.
• In environments of 60°C or higher, not only will battery life be shortened but the unit itself and its parts will deteriorate more rapidly. Please do not use in such environments for prolonged periods of time.

Estimated Battery Life

Model	Battery Life	Conditions
		Rec Interval	Graph Display
TR41/42	About 1 month	1 sec	constantly
	About 1 year	1 sec	less than 3 min a day
	About 1 year	10 sec or more	less than 1 hour a day
	About 1.5 years	10 sec or more	less than 3 min a day
TR45	About 1 month	1 sec	constantly
	About 6 months	1 sec	less than 3 min a day
	About 6 months	10 sec or more	less than 1 hour a day
	About 1 year	10 sec or more	less than 3 min a day

The battery warning mark may appear sooner than noted above.
Battery life will be shortened when: downloading data very often, setting the recording interval at less than 10 seconds, or measuring in an environment below 0°C or above 60°C.

For TR42:

Connect the supplied sensor to the sensor jack.
Insert the sensor completely until you hear a “click” sound.
Upon recognizing a sensor, the LCD will display the measurement.

For TR45:

Connecting the Pt Sensor

1. Loosen the screws of the terminal block.

2. Insert terminals A and B according to the diagram shown on the terminal block.

3. Firmly tighten the screws to the terminal block.
   (Maximum torque: 30N･cm)
   In the case of a 4-wire sensor, one wire will be left unused.

4. Use the supplied cable clamp to protect wire.

5. Make Sensor Settings in the App.

Connecting the Thermocouple Sensor

1. Check the sensor type and the polarity (plus and minus signs).

2. Loosen the screws of the terminal block.

3. Insert terminals plus and minus according to the diagram shown on the terminal block.

4. Firmly tighten the screws to the terminal block.
   (Maximum torque: 30N･cm)

5. Use the supplied cable clamp to protect wire.

6. Make Sensor Settings in the App.

TR45 Sensor Settings

Make sensor settings when connecting the sensor to the TR45 for the first time or when changing the sensor type.

1. In the Top screen of the ThermoREC App, tap for the target TR45 and select “Make Settings”.

2. Tap on the Recording Settings cell.
   

3. Tap Sensor Settings, and select the sensor type.
   

	[REC] Mark	Shows the recording status. ON: Recording in progress BLINKING: Waiting for programmed start OFF: Recording stopped
	[ONETIME] Mark	Indicates the recording mode is set to "One Time". The factory default setting is "Endless" and this mark does not appear. Endless: Overwrite oldest data when capacity is full. One Time : Recording automatically stops when capacity is full.
	Battery Warning Mark	Indicates it is time for the battery to be replaced. Please change the batteries as soon as you see this mark. See: Installing the Battery When the battery level becomes low, Bluetooth communication may not work properly. If the battery is left unchanged, all recorded data in the logger will be lost.
	Measurement / Indications	Measurements or operational indications are shown here.
	Sensor Type (TR45 only)	Shows the type of sensor set in the application. Thermocouple Sensor: K, J, T, S, or R Platinum Thermal Resistance Sensor: Pt (Pt100) or PtK (Pt1000) The sensor type can be changed via the application.
	[COM] Mark	Blinking: Communication in progress
	Measurement Unit	°C or °F

Logging Capacity FULL
	When Recording Mode has been set to “One Time” and the unit reaches its logging capacity of 16,000 readings, recording will automatically stop and in the LCD the measurement and the [FULL] sign will alternately appear.

Estimation of time until [FULL] is displayed

Rec Interval	1 sec	30 sec	1 min	10 min	60 min
Time Period	About 4 hours	About 5 days	About 11 days	About 111 days	About 1 year and 10 months

Sensor Error
	This will appear when a sensor has not been connected or the wire has been broken.
Note: Recording is in progress and so is battery consumption. If nothing appears on display after reconnecting the sensor to the unit, there is a possibility that the sensor or the unit has been damaged.