The CDK Handset App replicates the functionality of physical handset – part number HW1029 - and is fully compatible with all CDK devices with a serial handset port. Note: An Interface cable kit is required which can be obtained from: CDK Systems Ltd - +44 1260 296300/[email protected] Each interface cable kit comprises a data connector compatible with the CDK device handset port with a USB type A connector, adaptor cable for USB type Micro A/B and adaptor cable for USB type C connectors. This will enable connectivity with the vast majority of Android smartphones. Programming instructions are device dependant, users should download the relevant manual for full details, use the ‘Open controller manual’ option from the application menu bar. If you have any queries relating to this app please contact [email protected]