Multiple humidity sensors on one board?

I’m running zigbee temp/humidity sensors around the house, but I’m getting tired of disconnects/replacing batteries in some hard to reach areas.

Thus I’m wondering if there could be a wired alternative through ESPHome, say 3-5 humidity sensors on one board, which all would report to HA.

Seen some different setups, but they all future only a single humidity sensor.

Most grateful for any tips regarding hardware! :slightly_smiling_face:

Highly probably it will use I2C connection. When 2 ways can suggest.

First is to use sensors with possibility to change I2C address, but not wide choice actually of them.
Other is to use I2C multiplexer, like TCA9548A - will allow to connect more sensors with same address to virtual I2C buses.

I think you have to be careful with wire length with I2C though?

Thanks for your replies.

The optimal solution would be something that looks like Dallas components temperature sensors, which several sensors easily can be installed on one board.

Surely there must exist some similar hardware, that measures humidity instead of temperature…?

There are many sensors that do humidity (and temp for free). As mentioned above they use i2c and wiring length is dependent on how many and type of wiring. DHT11 and SHT30 etc. They need to be calibrated and position is important.

Also worth mentioning that a relative humidity reading is kind of meaningless without a corresponding (dry bulb) temperature.