If you look at the specification for a control panel battery you will find it probably has an operating temperature in the range of something like -15 to +50 degrees C. In addition the power supply and components inside the panel will generate some heat, so the panel will be a few degrees warmer than the ambient temperature.
Assuming that you have a control panel in mind, the specification should give you its operating temperature range. I've seen many installed in unheated warehouses so I can't imagine you would have a problem.
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