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Security monitoring products Coaxial surge protection scheme RS485 -7+12V chip surge protection scheme Coaxial surge protection scheme S-Video composite video circuit protection Coaxial surge protection scheme Recommended products Ceramic gas discharge tube Glass discharge tube High energy ignition discharge tube Switch gas discharge tube Transient suppression diode Electrostatic protection diode Thyristor Surge Suppressors Varistor Signal Power supply Thermistor Self recovery fuse Thermal Fuse