I recently installed a Scantronic 9448+ unit which is now working fine (thanks to your site - I had missed the bellbox tamper return...). The unit has been running fine for a couple of weeks, however I notice that the plastic case is quite warm, and with the box open the low voltage regulator heatsink is pretty hot!

I have measured & checked the current drawn by the 7 PIRs (~180mA) and 2 keypads (40mA), the battery is new, so I seem to be well below the spec'ed 500mA for the panel. Should I be worrying? or has anyone else noticed that the electronics on this panel normally run hot ?!

sounds ok, so long as the plastic case isnt so hot you cant touch it, scantronic panels do tend to run hot and after a few years the PCB's are often blackened with the heat from the heatsink.

Thanks for your reassuring replies!

I had a glance at low voltage regulator specs on the web and not only do they run happily at upto 150°C, but they also have "thermal shutdown". Great!

, Guy