The K-1900-7 panel phone will auto-dial a 1-32 digit programmable phone number each time the handset is lifted. The unit will Touch Tone or pulse dial and will not auto-dial on incoming calls. Vandal Resistant Features: 12 gauge (0.105″ thick) 316 stainless steel front panel Permanent laser etched graphics Metal handset cradle Armored handset cable Hex drive mounting screws Weather Resistant Features: Marine grade 316 stainless steel faceplate Marine grade 316 stainless steel hex drive screws Gaskets (on EWP models) Auto dials one programmable speed dial number (up to 32 digits) Touch tone or pulse dialing Non-volatile memory (no batteries required) Operates on analog PABX and key system extensions or analog Centrex and CO lines Programmable 6 digit security code Touch tone programmable 36” armored handset cable Programmable pre-dial pause Blocks fraudulent calls from hand held pocket dialers Hearing aid compatible amplified handset with sealed push button volume control Programmable default volume level Programmable volume control disable Flush mount using a standard double-gang box (not included) Surface mount using an optional VE-5×10 surface mount box (not included, see DOD 42