Fermion Temperature and Humidity Sensor SHT40

This Fermion breakout from DFRobot measures temperature and humidity with the Sensirion SHT40, the fourth generation of SHT sensors. It measures -40 °C to 125 °C with typically ±0.2 °C and 0 to 100 % RH with typically ±1.8 % RH. A built-in heater helps with condensation. The breakout runs on 3.3 V and 5 V and is read via I2C. In low power mode the sensor needs less than 0.15 mA.

Features:

• Temperature -40 °C to 125 °C, typically ±0.2 °C
• Humidity 0 to 100 % RH, typically ±1.8 % RH
• Built-in heater against condensation
• Low power consumption
• Small board with two M2 mounting holes

Application Examples:

• Weather station
• Monitoring the climate in buildings and warehouses
• Incubator and germination box for seeds
• Keeping animals and plants

Documentation:

• Wiki DFRobot
• Arduino library (GitHub)
• Schematic (PDF)
• Datasheet (PDF)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: SEN0428
• Sensor: SHT40 (Sensirion)
• Operating voltage: 3.3 V to 5 V
• Operating current: 0.45 mA
• Interface: I2C
• Response time: 8 s (tau 63 %)
• Humidity: 0 to 100 % RH, ±1.8 % RH
• Temperature: -40 °C to 125 °C, ±0.2 °C
• Connections: VCC, GND, SCL, SDA
• Dimensions: 14 × 17 mm
• Mounting holes: M2, spacing 10 mm
• Weight: 6.4 g

Scope of Delivery:

• 1× Fermion temperature and humidity sensor SHT40