PowerSeries high-quality, slim-profile keypads achieve a clean, unobtrusive look that homeowners welcome and installers will appreciate for their easy programming and installation. The keypads feature an input/output terminal that can be programmed to operate as a zone input, programmable output or as a low temperature sensor. The keypads also include adjustable backlit keys that address low-light situations and five programmable keys for simple one button activation of system functions. PK5500/RFK5500 64-zone full-message keypads support eight languages, global partition status and full, 32-character programmable phrases.