The K-1500-E and K-1500-EHF Emergency Telephones provide reliable emergency communication without complicated dialing procedures.~ The K-1500-E and K-1500-EHF can be connected directly to a C.O. line or analog PABX/KSU station when used in conjunction with a Hot-Line Dialer or programmed ring down circuit. The phones can also be used with Viking???s DLE-200B ring down circuit. ~ The K-1500-E and K-1500-EHF components conform to industry-set standards, and are mounted on a formed metal panel and finished in red powder paint. ~ *For ADA compliant phones, use the 1600A Series!