Flush mount emergency telephone - 0 views
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psstwater on 14 Aug 18These one button security intercom staions are hands-free and feature a call progesss lamp when in active state. at the press of emergency call button, the device speed dial a primary telephone number. if the number is busy or does not answer, the emergency call box will hang up and dial the next number untill it get through, when the call button is pressed, the lamp lighten to indicate a call being placed.