Stainless Steel Handsfree Phone with Dialer, Push-To-Talk Button, Flush Mount. The E-30-PT is designed to provide quick and reliable communication in noisier areas. The mic sensitivity is set to a low level until the TALK button is pressed then it is raised to a normal level. In this way, the E- 30-PT assures that the called party s voice will be broadcast over the speaker. In applications where the background noise can be louder than the person calling, a handset type phone is recommended. The E-30-PT features non-volatile memory, a built in dialer, and intelligent call progress detection for automatic hang-up when the call is completed. The E-30-PT can be programmed to dial up to 5 different numbers on ring no answer or busy and can be configured to dial these numbers until answered. The E-30-PT-EWP shares all of the features of the E-30-PT in addition to Enhanced Weather Protection (EWP) for outdoor installations where the unit is exposed to precipitation or condensation. EWP products feature foam rubber gaskets and boots, silicon sealed connections, gel-filled butt connectors, as well as urethane or thermal plastic potted circuit boards with internally sealed, field-adjustable trim pots and DIP switches for easy on-site programming. Applications Non-ADA Hot-Line Phones for: -Terminals Stadiums -Parking lots/ramps -Convention centers -ATM machines Gate and Door Entry Phones for: -Business lobbies -Vehicular and pedestrian gates -Residences Features Vandal Resistant Features: 14 gauge louvered 316 stainless steel faceplate with permanent laser etched graphics, speaker/ mic screen, heavy duty metal keypad and Call button and hex drive mounting screws Weather Resistant Features: Marine grade 316 stainless steel faceplate, screws and and push button switch. Switch internally sealed per IP67. Mylar speaker. Self-draining mic mount. Faceplate, mic and speaker gaskets. Weather resistant powder paint on optional VE-5x5 (DOD# 424). E-30-PT-EWP is designed to meet IP66 Ingress Protection Rating (see DOD# 859 for more information) Push to talk button Telephone line powered Non-volatile memory (no batteries required) Programmable to dial up to 5 numbers on busy or ring no answer Red off-hook LED indicator Volume adjustments for microphone and speaker Advanced call progress detection: disconnects on busy signal, return to dial tone, CPC, reorder tone, maximum call time out and programmable silence time out Selectable auto-answer feature for monitoring Selectable push button disconnect Extended temperature range (-15F to 130F) Flush mountable using included plastic rough-in box Optional VE-5x5 surface mount back box (DOD# 424).