The new devices use touchkeys instead of traditional mechanical keys and the key interface illuminates only when touched. With a depth of just 17.5mm, these keypads sit unobtrusively on any wall. Model SPCK520 offers display and speech output and model SPCK521 adds an ID card reader.

The new keypads support EM and Mifare card technologies. Advanced user authentication eliminates the inconvenience of repeated PIN code entry on systems that are armed and disarmed many times daily. Users can download prerecorded or customised audio files to the keypads. These audible messages assist users when various system events occur.

The large graphical display provides a wealth of information at a glance. For instance, users can access detailed information about doors that are open or ajar and therefore preventing the system from being armed. The keypads supply system information and offer various ways to configure the parameters of the SPC system on-site – without additional tools such as a PC.

An optional plug-in RF module allows the keypads to be used as RF receivers for communication with wireless detectors nearby. This eliminates the need for separate RF receivers. In addition, the keypads have push-wire terminals so that installers can secure the wires of connection cables with a single push action. For flush mounting, Siemens offers a special frame that allows the keypad to be installed flush with the wall. An optional metal enclosure is available for installation in concrete walls.

The compact keypads are backward-compatible with existing SPC systems. Users can choose from the eight languages that are supplied as standard, with additional language packs available for download.