SP300-1. The Videx S300-1 is a Vandal Resistant Digital Audio Panel, particularly suitable for use on larger systems with more than 20 apartments or offices. The S300-1 incorporates a caller style keypad, allowing the user to simply type in the required apartment / office number to which the call is to be directed. Both audible and visual instructions are provided throughout the process of making a call by way of instructions on the back lit LCD display, and spoken messages through the speaker. The numeric keypad, furthermore, incorporates black enamel numbering with yellow contrast rings to each button for the visually impaired.. Vandal resistant. 12 gauge stainless steel audio digital door panel. 2 line 16 character LCD display. Panel dimensions: 140mm x 280mm