You can access the API through plain MQTT or secure MQTT with TLS, using the following topics

MQTT

Security	Endpoint	Port
TLS	api.connectedsensors.com	8883

You can download the Connected Sensors PEM certificate for TLS here

Security Note: We strongly advise to use MQTT with TLS to make sure your data travels encrypted, avoiding the exposure of your API token and/or sensor data to third parties.

NOTE: To avoid future inconveniences, we advise to use both certificates in your device's auth routines. While the first one is the current valid certificate, we may change this after 2021.