Air Temperature and Humidity Sensor SHT40 - with connector, 1m

Product detailed description

The SHT40 temperature and humidity sensor is a highly accurate digital sensor from Sensirion designed for measuring relative humidity and temperature across a wide range of environments. Thanks to modern CMOSens® technology, it offers low power consumption, fast response, and stable measurements. The module is equipped with a 1m cable terminated with an SP13 connector, allowing for easy installation in, for example, measurement systems, IoT devices, weather stations, or smart home systems.

Thanks to its robust construction and high-quality housing, the sensor provides fast response, low hysteresis, and long-term stability. If you're looking for a precise temperature and humidity measurement solution with easy connectivity, the SHT40 is the obvious choice!

A good combination with LaskaKit μŠup-SP13-I2C 4pin 5cm cable

Sensor Refresh:

• We recommend that you refresh the sensor before the first start-up to remove any contamination and ensure that the sensor measures within the specified parameters. The refresh procedure consists of starting the internal heating of the sensor at a temperature of approximately 120°C for approximately 90 minutes until the measured humidity value drops to approximately 0–100 % RH. It is better to perform this procedure in a room with a humidity of about 50% RH and a temperature of about 23°C. Depending on the temperature and humidity in the room, the procedure time may vary. For this purpose, we have created a program for Arduino, where its basic properties are incorporated into the control of the internal heating and simultaneous measurement of the current humidity value. When the measured humidity drops to 5% RH, the cycle stops and switches to the standard measurement. The accurate values are then available after the sensor has cooled down to ambient temperature.
• This procedure can be used even if the sensor stops measuring the correct values over time.

Specifications:

• Sensor type: digital temperature and humidity sensor
• Chip model: Sensirion SHT40
• Communication interface: I²C
• Supply voltage: 1.08–3.6 V
• Humidity measurement range: 0–100 % RH
• Humidity measurement accuracy: typically ±1.8% RH
• Temperature measurement range: −40 to +125 °C
• Temperature measurement accuracy: typically ±0.2 °C
• Humidity resolution: 0.01% RH
• Sensor response: approximately 2–8 s depending on conditions
• Cable length: 1 m
• Connector: SP13
• Wire connection:
  • PIN1: GND,
  • PIN2: VCC (3.3V),
  • PIN3: SCL,
  • PIN4: SDA.
• Sensor body material: chrome-plated brass
• Dimensions: ø13x40mm

Package contents:

• 1× SHT40 temperature and humidity sensor with 1 m cable and SP13 connector

Note:

• Before first use, it is necessary to activate the internal heating element for a minimum of one hour to dry the sensor.
• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.