Bosch Communications Showing all 2 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sale! Bosch PRAESENSA 12 Button Keypad Extension for PRAESENSA Call Stations to Make Selections for Business and Alarm Calls $633.00 Original price was: $633.00.$189.90Current price is: $189.90. Add to cart Sale! Bosch PRAESENSA System controller – Controls a System with up to 250 Devices and up to 500 Zones $7,900.00 Original price was: $7,900.00.$199.99Current price is: $199.99. Add to cart