DHT Temperature+Humidity Sensor¶
The DHT Temperature+Humidity sensor allows you to use your
AM2120 (datasheet),
sensors with ESPHome.
![../../_images/dht-full.jpg](../../_images/dht-full.jpg)
DHT22 Temperature & Humidity Sensor.¶
The DHT22 and DHT11 require external pull up resistors on the data line. To do this, solder
a resistor with about 4.7kΩ (anything in the range from 1kΩ to 10kΩ probably works fine, but
if you’re having issues try the 4.7kΩ recommended by the manufacturer) between DATA
and 3.3V
.
![../../_images/temperature-humidity.png](../../_images/temperature-humidity.png)
# Example configuration entry
sensor:
- platform: dht
pin: D2
temperature:
name: "Living Room Temperature"
humidity:
name: "Living Room Humidity"
update_interval: 60s
Configuration variables:¶
pin (Required, Pin): The pin where the DHT bus is connected.
temperature (Required): The information for the temperature sensor.
All options from Sensor.
humidity (Required): The information for the humidity sensor
All options from Sensor.
model (Optional, int): Manually specify the DHT model, can be one of
AUTO_DETECT
,DHT11
,DHT22
,DHT22_TYPE2
,AM2302
,RHT03
,SI7021
,AM2120
and helps with some connection issues. Defaults toAUTO_DETECT
. Auto detection doesn’t work for the SI7021 chip.update_interval (Optional, Time): The interval to check the sensor. Defaults to
60s
.
Note
The default accuracy_decimals
value of the humidity levels is 0
, as the DHT11 for which this was
originally written does not have a higher resolution. All other DHT sensors have a higher resolution, it’s worth
to configure them with accuracy_decimals: 1
.
If you’re seeing lots of invalid temperature/humidity warnings in the logs, try manually setting the
DHT model with the model:
configuration variable. Other problems could be wrong pull-up resistor values
on the DATA pin or too long cables.