"I have been told that the Boeing & Airbus systems differ in that Boeings monitor the temp in the bay and give a warning to tell the pilot to deploy the gear if its triggered."
It really depends on what sort of Boeing we are talking about here, RDJ. Some have wheel well fire warning systems and brake temperature monitoring systems. For example, an EICAS advisory message is given for high brake temperatures on an aircraft like the 747-400 and a full EICAS fire warning is given for a wheel well fire (triggered by very high temperatures in the wheel wells). The latter system uses fire loops which run around strategic points in the wheel wells. On a 767, for example, the brake temperature monitoring system appears to be optional. Our airline's 767's have them, others don't. I'm not familiar with other types of Boeings.
Rgds.
Q.