Large, easy-to-use keypad Comfortable so'-touch keys are illuminated for nighttime visibility Built in 5881ENH wireless receiver The sounder beeps to help identify security system status Easy to read with large characters and simplified descriptions Fully compatible with all 5800 wireless devices including bidirectional devices*(*Not compatible with 5839) Four larger function keys can be programmed for one touch operation and are accessible even when the door is closed Sleek, white design blends with any decor Contoured, removable door lets customers customize the keypad for the look they want