VIDEX GSM4KCR-1S/4G 1 Way Surface Mounted Audio GSM Kit with Keypad - GSM4KCR-1S
The Videx 4000 Series GSM4KCR-1S/4G ΓÇ£entry-levelΓÇ¥ surface mounted audio kit is a totally self contained GSM door entry system kit complete with keypad. This keypad has 3 codes, 2 changeover relay outputs and an override input.