Durable stainless steel flush mount handsfree low power consumption speakerphone with push button for ring-down operation and red LED light to indicate phone is activated. Press button to 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. Telephone can be flush mounted or installed in our 331-005 weatherproof or 331-HOB weather resistant housing.