– Alternate action call button to place or cancel a call
– Intelligent call progress detection for automatic hang-up on CPC, silence, busy signal, or time out
– Telephone line powered
– Weather resistant features: mylar speaker, gaskets, internally sealed push button switch, UV stable exterior, enamel coated PCB
– Optional Enhanced Weather Protection (EWP) available for greater weather resistance
– Adjustable microphone and speaker volume
– Programmable maximum call length
– Selectable auto-answer feature allows remote monitoring
– Two way handsfree communication
– Programmable VOX (mic/speaker) switching speed
– Light gray colored, impact resistant, U.V. stable, plastic chassis
– Surface mountable only