BOSCH SECURITY SYSTEMS B5512-DP-920 Intrusion Alarm System Control Panel Kit, Includes B5512 28-Point Control Panel/B11 Small Enclosure/B430 PSTN Communication Module/B920 Keypad/CX4010 Transformer - Nexlar E-Commerce
Doyle Security Systems - How To Use Basic Keypad Functions on a Bosch Panel - YouTube