Modern, slim-line landscape keypad. 5 programmable function keys. Input/Output terminal can be programmed to operate as a zone input, programmable output or as a low temperature sensor. 3 one-touch emergency keys. Multiple door chime per zone. Adjustable backlight and keypad buzzer. Dual wall-mount and front cover tamper. Surface or single-gang box mount. Available with English function keys. RFK5501 includes all of the same features and supports 32 wireless zones and 16 wireless keys.