Security System Output Interface with Overload Detection and Protection

A security system, comprising:

• an output circuit for providing power to an output device;
• and
• a security panel comprising:
• a port controller for controlling an output port with a control signal;
• an output interface circuit for receiving a control signal from the port controller and comprising:
• an output switch for activating one or more output devices in response to the control signal of the port controller;
• and
• a overload detection circuit for deactivating the one or more output devices in response to determining that a magnitude of a voltage associated with the one or more output devices exceeds an overload threshold voltage.

A method of using an output interface circuit for a security panel, the method comprising:

• an output switch activating one or more output devices in response to a control signal from a port controller;
• an overload detection circuit determining that a magnitude of a voltage associated with the one or more output devices exceeds an overload threshold voltage;
• and
• the overload detection circuit deactivating the one or more output devices in response to determining that the magnitude voltage exceeds the overload threshold voltage.