This document introduces the electrical characteristics of the H12K5 resistance humidity sensor, including rated voltage, operating temperature range, recommended driving frequency, operating humidity range, etc. In addition, detailed parameters such as response time, accuracy, hysteresis, etc. of the sensor are provided, and a sensor resistance table under different temperature and humidity conditions is given. Finally, the document mentions the applications of this sensor.
The H12K5 is a resistance‑type humidity sensor designed for humidity detection, humidifier/dehumidifier control, and other humidity‑related applications. It operates with a wide voltage range and can be driven at 1 kHz.
Key performance figures include a rated voltage of DC 1‑12 V or AC 1 Vrms, operating temperature from 0 °C to +50 °C, humidity range of 20‑90 %RH, and a maximum response time of 60 seconds. The sensor provides a standard resistance of 22 kΩ at 25 °C/60 %RH and an accuracy of ±5 %RH.
| Rated voltage | DC 1~12 V or AC 1 Vrms (Ac0.3 mW) |
|---|---|
| Recommended driving frequency | 1 kHz |
| Operating humidity range | 20 %RH ~ 90 %RH |
| Storage temperature range | -20 °C ~ +85 °C |
| Storage humidity range | 90 %RH max |
| Standard resistance | 22 kΩ at 25 °C, 60 %RH, 1 kHz |
| Response time | Maximum 60 seconds |
| Accuracy | ±5 %RH at 25 °C, 60 %RH |
| Hysteresis | 39 %~6 %RH max (40 %RH → 80 %RH) |
The sensor can be powered with DC 1 V to 12 V or AC 1 Vrms (Ac0.3 mW).
The maximum response time is 60 seconds.
A driving frequency of 1 kHz is recommended.