Phone: 253-927-6186

Two channel data logger.

RTR-53 Data logger wireless. Temperature Range 0 to 55 deg C. Humidity Range: 10 to 95% RH.
RTR-53L Data logger wireless. Temperature Range 0 to 55 deg C. Humidity Range: 10 to 95% RH Large Capacity Battery Type.
The RTR-53 with its standard temperature humidity sensor is able to simultaneously measure and record temperature within a range of 0 to 55°C and humidity within a range of 10 to 95%RH.
The sensor for the RTR-53 has been specially designed to withstand certain amounts of condensation.
The RTR-53 has an IEC water resistance rating of IP-64. Note: The main unit is designed for use in environments with an ambient temperature between -40 to 80°C and is water resistant.

RTR-53 Data logger

Model  Description 
RTR-53  Temperature humidity Data logger wireless.
RTR-53L  Temperature humidity Data logger wireless.
RTR-53 Data logger specifications

Measurement Channel

1Temperature and
1 Humidity Channel

External Temp. Sensor

0 to 55°C

External Humidity Sensor

10 to 95%RH

Measurement Display Resolution


Measurement Accuracy

Avg ±0.3°C
(at 25 and 50%RH)

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

8,000 Readings x 2 Channels

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)


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

(length: Approx.1m) x 1

Unit Temp. Resistance

-40 to 80°C


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