The E-30-PT is 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 areas where the background noise can be louder than the person calling, a handset type phone is recommended.
Includes weather-sealed trim pots and DIP switches, a special rubber microphone boot and a mylar speaker with a rubber gasket acting as a primary shield against water penetration. If required, face plate gaskets are provided to further eliminate water infiltration. All connections are hand soldered to eliminate corrosion, and the connections at the push button switch, microphone, and "Call Connected" LED are also hand sealed using a special non-corrosive electronics grade flexible silicone sealant. The entire circuit board is "potted" in a flexible urethane encapsulating material, leaving the weather sealed field-adjustable trim pots and DIP switches accessible for on-site programming. The flexible urethane sealant allows the circuit board and its components to expand and contract, while maintaining weather resistance. To protect the tip and ring connections, special connectors filled with anti-corrosive sealing gel are included.