Used Ibeacon of the Minew brand, in which the MQTT protocol was activated in which the data is sent to the CloudMQTT and searched for these values through a server Node-RED local, where it is presented in a dashboard. In this case was necessary that send when the temperature was low and high one message in telegram using the bot. For send a message in the telegram you need add the plugin telegrambot. I used the temperature and humidity sensor.
The Product https://en.minewtech.com/
The server MQTT https://www.cloudmqtt.com/