# Uplink/Downlink Overview
# Message Types
There are two types of messages when communicating with Radio Bridge sensors or the web-based console, uplink and downlink. Uplink messages originate from the sensor and are received by the Console and/or third-party application. The uplink messages communicate sensor events, alerts, heath, and status of the sensor.
Downlink messages originate from the Console and/or third-party application and are received by the sensor. Downlink messages provide configuration information for the sensor, and after receiving this information the sensor will behave accordingly.
# API Configuration
To utilize the Console API, go to the Radio Bridge Console application at https://console.radiobridge.com (opens new window) and click on the “API” tab along the left side. From there you can use the uplink and downlink APIs as described in the following sections.