Part number: P51269 · Issued: 12 November 2026
Key features
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Measures air temperature and relative humidity in one compact sensor
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Digital SDI-12 output (v1.3) for direct connection to Wildeye dataloggers
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Full 0–100% humidity range
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Stainless steel mesh protects the measuring element
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Measuring chip can be replaced on site, with no gap in the data record
Overview
The ACC-SEN-ATH is a compact air temperature and relative humidity sensor. It has a digital SDI-12 output and connects directly to the NACS input on Wildeye dataloggers. It measures air temperature from –40 to 60 °C with an accuracy of 0.15 °C, and relative humidity from 0 to 100% with an accuracy of ±2%.
You can replace the measuring chip on site. You don’t need to remove the sensor, and the data record isn’t interrupted. This costs less than sending the sensor away for cleaning and recalibration.
For accurate outdoor readings, mount the sensor in a radiation shield (ACC-SHIELD-ATH), sold separately. The shield keeps off direct sun and weather and still lets air flow over the sensor.
Specifications
Measurement
|
Measured variables |
Air temperature (°C,°F), relative humidity (%) |
|---|---|
|
Temperature range |
–40 to 60 °C |
|
Temperature accuracy |
±0.15 °C |
|
Humidity range |
0 to 100% RH |
|
Humidity accuracy |
±2% RH |
Physical
|
Operating temperature |
–40 to 80 °C |
|---|---|
|
Sensing element protection |
Stainless steel mesh |
|
Dimensions |
(Ø × L) 20 × 92 mm |
|
Weight |
26 g |
Connection
|
Connector |
M12 male, 5 position |
|---|---|
|
Cable length |
1m |
|
Pin |
Wire colour |
Function |
|---|---|---|
|
1 |
Brown |
V+ |
|
2 |
White |
SDI12 |
|
3 |
Blue |
N/C |
|
4 |
Black |
GND |
|
5 |
Grey |
N/C |
Compatibility
|
Compatible loggers |
Wildeye -NACS plug |
|---|---|
|
Power draw |
2.5mA @ 12V |
|
Mywildeye.com Add Sensor template |
ACC-SEN-ATH |
|
Add Sensor QR |
Use this QR code in the Wildeye App to add this sensor |
|
Spare parts |
Replacement humidity sensor chip - ACC-SEN-ATH-CHIP. |
