Firefighting and fire protection – CAN interface for components in emergency vehicles – Part 3: Warning signal unit
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 08/01/2016

Firefighting equipment – Standardized CAN interface for components in emergency vehicles – Part 3: Warning signal unit
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2014