Phone: 253-927-6186

Temperature Data logger.

RTR-52 Temperature Wireless Data logger, with external sensor, is able to measure and
record in a range of -60 to 155°C.
RTR-52L Temperature Wireless Data logger, with external sensor, is able to measure and
record in a range of -60 to 155°C.
Large Capacity Battery Type. The RTR-52 is IEC rated at IP-64 which is continuous spray.
It is not recommended to operate either unit fully submerged on a continuous basis.
Note: The main unit is designed for use in environments with an ambient temperature of between
-40 to 80°C, but in an environment with a temperature of below -30°C communication will not be possible.

RTR-52 Data logger

Model  Description 
RTR-52  Temperature Wireless Data logger with external sensor
RTR-52L  Temperature Wireless Data logger with large battery
Temperature Data Logger specifications
Measurement Channel
1Temperature Channel
External Temp. Sensor
-60 to 155°C
Measurement Display Resolution
Measurement Accuracy
Avg ±0.3°C(-20 to 80)
Avg ±0.5°C
(-40 to -20/80 to 110)
Avg ±1.0°C
(-60 to -40/110 to 155)
Recording Interval
1,2,5,10,15,20,30 seconds / 1,2,5,10,15,20,30,60 minutes
Total of 15 choices
Recording Capacity
16,000 Readings x 1 Channel
Recording Mode
Endless (Overwrite oldest data when capacity is full) /
One-time (Stop recording when capacity is full)
LCD Display Items
Current Readings / Recording Settings / Battery Life Warning /
Over Measurement Range Warning / Amount of Recorded Data
Lithium Battery (LS14250(SAFT)) x 1 or AC Adaptor (sold separately) *2
Battery Life *3
Approximately 6 months
Wireless Method
FCC Part 15 Section 249 / IC RSS-210
Transmission Range
Approximately 100m (May vary with conditions)
H62mm x W 47mm x D19mm (excluding protrusions / antenna length 20mm)
Interface Wireless Communication / Optical Communication
Communication Speed When downloading data (Wireless) about 2,000 readings per minute
[Collection of a full unit of data= about 420 seconds
(optical communication= about 160 seconds)]
Water Resistance *4 IP64 (rated for use in daily life)
Standard Sensor / Input Cable TR-5106
(length: Approx.0.6m) x 1
Unit Temp. Resistance -40 to 80°C
Others RTR-51/52/52Pt/53: In order to download data via wireless communication, it is necessary to purchase either an RTR-57U, RTR-5W, and/or RTR-50 unit.
-For optical communication, TR-50C can also be used for all types of units.

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Hotek Technologies, Inc
tel: 253-927-6186