# Features The library does provide a simple and secure way (error handling) of interacting with the Dorji DRA818X. All commands which are available for the module are implemented as methods: - Handshake - Frequency Scan - Update group settings - Volume - Filter For the group setting command and the filter command you will first need to set the given parameters with their corresponding setter methods. E.g. `setFrequency()`, `setRxFrequency()`, `setTxCTCSS()`, `setSquelch()`, `setEmphasisFilter()` and so on. The library also provides error handling for incorrect wirering, wrong parameters, etc.