SEM Security Systems
a division of Southeast Mobility
So, your yellow light is on, the keypad is beeping, you've
pressed *2 and the keypad is displaying a 2, or it reads out
Your system is powered by a 16.5 volt 40 VA transformer.
You will find it plugged into a wall outlet somewhere in the
home and it may or may not be near the main panel. It will
be white cube about 3 inches in size and there will be a
screw holding it to the wall outlet. Once you find this
transformer you should plug a fan or other appliance into
the open side of the outlet. If the appliance works in this
outlet, then you probably have a bad transformer and you
should contact us to schedule a service call for
If the appliance does not work, then you have lost power to
that outlet and you should check your breakers or contact a
qualified electrician to trouble shoot the problem.