The older generation Oolers use bluetooth and there are a fair number of integrations including an [MQTT bridge](https://github.com/turmoni/ooler-mqtt-bridge) and a [HomeAssistant integration](https://github.com/PostLogical/ooler).
I'm less familiar with their latest generation which uses WiFi, though there [seems to be an API](https://docs.developer.sleep.me/api/ ) available for it now.
The older generation Oolers use bluetooth and there are a fair number of integrations including an [MQTT bridge](https://github.com/turmoni/ooler-mqtt-bridge) and a [HomeAssistant integration](https://github.com/PostLogical/ooler).
I'm less familiar with their latest generation which uses WiFi, though there [seems to be an API](https://docs.developer.sleep.me/api/ ) available for it now.