Durable mini stainless steel flush mount handsfree low power consumption speakerphone for emergency and courtesy communication. Designed for ring-down operation with red LED light to indicate phone is activated. Press red button to initiate and disconnect call. Telephone can be programmed to cancel calls after 1, 3, or 5 minutes or no call time-out. Phone relies on external equipment to control calling. Equipped with weatherproof, puncture resistant speaker and microphone, and tamper resistant security screws.