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ESP32 BLE rang extension

Hello

Using ESP32 Dev V1 board for BLE MQTT gateway with MI temp/Hum probe.

Coverage is very low in my house, despite I installed ESP32 in a central zone.

Which board do you use to extend BLE range ? external antenna can improve.

any experience to share ?

How much do you have ?

-80 to -90 dbm

It sees only 3 on my 7sensors at same floor.

My house is however widely open

I’lm looking for esp32 model with external antenna

Here is some infos about the range I have :

With an esp32 dev board