Guardian Telecom DP70 Industrial Desk Phone Features: Waterproof tissue layer papan ketik for added cleanliness and level of capacity fluids Robust mobile phone and cord Attractive move with no moving parts for prolonged life Exemplified routine forums are resistant to water, exotic moisture and my own condensation Service temperature from -40 to +60 C (-40 to +140 F) Kydex 100 faceplate is 94V-0 fire slowing, resilient, impact-resistant and easy to clean Folding the base allows the desk-top phone to be wall mounted Electret disturbance decreasing microphone Amount modification and muting Ten-number memory, redial and recall Tone/pulse switchable (switch inside telephone) - initial configurations are set to develop prior to shipping.