Clymac have vast experience of working in operational hotels and were asked to look at how The Grand Hotel's obsolete addressable system could be upgraded without the cost and disruption of a completely new installation. After a thorough investigation it was accepted the existing MICC installation could be re-used with some modifications. Careful planning with the hotel ensured the system comprising four ZP3 panels and nearly one thousand devices was installed with minimal disruption. The use of the Z832 integrating multi-sensor in bedrooms also provided the latest detection technology to reduce unwanted alarms.