Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Direct access to our certified experts
Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Direct access to our certified experts

- Humidity measurement
Measurement method: ROTRONIC HYGROMER® IN-1
Measurement range: 0...100 %rh (non-condensing)
Accuracy at 23 °C: ±1.3 %rh @ 0…10 %rh
±0.8 %rh @ 10…60 %rh
±1.3 %rh @ 60…100 %rh
Repeatability: 0.3 %rh
Response time: Typical 3 min. (Depends on air flow)
Long-term stability: < 1 %rh / year
- Temperature
Measurement method: PT100 RTD (IEC 751 Class A)
Measurement range: 0…50 °C
Accuracy at 23°C: ±0.3 °C
Repeatability: 0.05 °C
Response time: Typical 10 min. (depends on air flow)
Long-term stability: < 0.1 °C / year
- Dew point
Measurement method: Calculation (from %rh and °C)
Dew or frost point (user configurable range)
- Logging function
Logging modes: Start-Stop (recording stops when memory is full)
Loop: oldest data is dumped to make room for the latest data
Logging interval: Min 5 sec. Up to 1 hour in 5 sec. increments
LED indicator: 5 sec. green flash when recording data
5 sec. red flash for out-of-limit value or logger problem
- General specifications
Device Type: Humidity-temperature data logger with internal sensor(s)
Battery type: 3 x AA (1.5 V) alkaline
Battery lifetime: Depends on log interval and other settings.
Start-up time: 1.9 s (typical)
Data refresh rate: 1.7 s (typical)
- Storage & recording specifications
Recording capacity: 20'000 value pairs
Recorded parameter(s): Relative humidity and temperature
Record media : Internal EEPROM non volatile, not removeable
- Service & data interface specifications
Interface type: UART (Universal Asynchronous Receiver Transmitter)
Max. service cable length: 5 m (16.4 ft)
- Display & housing specifications
Display: LC, 1 or 2 decimals resolution, blacklight, alarm and low battery indication
Housing material: ABS
IP protection: IP 40
Dimensions: 130 x 72 x 32 mm (5.1 x 2.8 x 1.3”)
Weight: About 210 g (7.4 oz)



