Audible Alarm	There are some SpikeMaster surge protectors that come with audible alarms. These alarms let you know that the unit is still protecting. If the unit is no longer protecting, the light will go out.
Coax Connections	The number of coax connections present on the surge protector.
Coax Video Cable Length	The length of the coax cable that comes included in the package with the surge protector.
Circuit Breaker	Circuit breakers stop the flow of electricity when a circuit is overloaded.
Electrical Outlets	The number of electrical outlets that are present on the surge protector.
Ethernet Connections	The number of ethernet connections present on the surge protector.
Ethernet Cable Length	The length of the telephone/fax cord that comes included in the package with the surge protector
EMI/RFI	Electro Magnetic Interference (EMI) and Radio Frequency Interference (RFI). These are line noise or interfering signals.
Ground Fault	Any undesirable current path from a current-carrying conductor to ground
Indictor Light	There are some SpikeMaster surge protectors that have indicator lights. These lights let you know that the unit is still protecting. If the unit is no longer protecting, the light will go out.
Joule	A Joule is a unit of energy. In general, the higher the Joule rating, the better protection.
Power Cord Length	The length of the power cord from the surge protector to the wall outlet.
Telephone Connections	The number of telephone connections present on the surge protector.
Telephone/Fax Cord Length	The length of the telephone/fax cord that comes included in the package with the surge protector