Measurement items

Temperature 1 ch and Humidity 1 ch (Requires included or optional humidity sensor)

Measurement range

Temperature: -40.0 to 85.0 °C, Humidity: 0 to 100 % rh *at sensor environment

Basic accuracy

[Temperature] : ±0.5 °C (main unit + sensor accuracy, at 0.0 to 35.0 °C)

[Humidity] : ±5 % rh (main unit + temperature / humidity sensor LR950x combination, at 20 to 30 °C / 10 to 50 % rh)

Note: Basic accuracy is typical value, refer to the detailed catalog

Storage capacity

Instantaneous value mode: 60,000 data/ch, Statistical value mode: 15,000 data/ch

Recording interval

1 to 30 sec., 1 to 60 min., 15 selections

Recording modes

Instantaneous recording: at every recording interval

Statistical value recording: Measure at one second intervals, and record the instantaneous, maximum, minimum, and average values within every recording interval

Recording methods

One-time recording: Stop recording when the memory capacity is full

Endless recording: Continue recording even when the memory capacity is full (old data is overwritten)

Start: Logger button operation or scheduled time

Stop: Logger button operation or scheduled time, or auto-stop when the memory capacity is full (at one-time recording)

Other functions

Always backs up last recorded data; backs up recorded data and setting conditions when battery power is low

Note: After batteries are replaced within 30 seconds, recording resumes automatically (Recording is interrupted during battery replacement)

Waterproof and dust-proof

IP54 (EN60529) (with sensor connected, but not including sensor tip)

Interfaces

Infrared optical communications with LR5091, LR5092-20

Power supply

LR6 (AA) Alkaline battery × 1, Battery life: Approx. 3 months (Instantaneous recording, with 1-minute interval and auto power saving, at 20 °C), Approx. 20 days (Instantaneous recording, with 1-second interval at 20 °C)

Dimensions and mass

79 mm (3.11 in) W × 57 mm (2.246 in) H × 28 mm (1.10 in) D, 105 g (3.7 oz)

Accessories

LR6 (AA) Alkaline battery (built-in internal) × 1, Humidity Sensor LR9504 × 1, Instruction manual × 1, Operation guide × 1, Kickstand × 1