The Total Surge Solution (TSS) is a range of products that provide total surge protection for addressable and conventional alarm systems. The DTK-TSS4D protects 120V power on electrical circuits and control panels and has dry contacts for remote notification of surge protection status. Its hybrid design provides maximum critical load protection with EMI/RFI filtering and NEMA 4X enclosure protects against harsh environments such as outdoor locations, chemical plants and water treatment facilities. The TSS4D is ideal for use when a UL listed SPD is required.