Honeywell HIH-4010/4020/4021 Series
The HIH-4010/4020/4021 Series provides high-quality relative humidity (RH) measurement in a cost-effective, solderable SIP (Single In-line Package) housing. With a typical current consumption of just 200 µA, these sensors are ideally suited for battery-powered, low-power applications.
The sensor element’s multi-layer construction offers excellent resistance to common application hazards such as moisture, dust, dirt, oils and typical environmental chemicals.
Ordering information
HIH-4010
- Unsealed moisture sensor with integrated circuit
HIH-4020
- Sealed moisture sensor with integrated circuit
HIH-4021
- Sealed, condensation-resistant humidity sensor with integrated circuit

Potential applications
Precise measurement of humidity and temperature in:
- Air conditioning systems, thermostats, humidifiers
- Compressed air lines
- Weather stations
- Grain drying systems
- Sleep apnea devices and ventilators
- Incubators
- Thermoset housing
- Nearly linear voltage output versus %RH
- Low power consumption
- Increased accuracy
- Fast response time
- Stable, low-drift performance
- Chemically resistant
| Accuracy Humidity | ±3.5%RH |
| Temperature range | -40°C to 85°C |
| Signal output | Analog |
| Mounting option | SIP |
| Response time | 5s typ. 1/e slow moving air |
| Long-term stability | ±1,2 %RH or 5 years |
| Operating range | 0%RH to 100%RH |
| Supply | 4 Vdc to 5.8 Vdc |
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