The genuine Samsung microwave keypad, model DE34-00439A, is essential for operating your 2.1 cu. ft. over-the-range microwave oven. If you notice the keypad is unresponsive or certain buttons no longer activate their respective functions, it may be time to replace the switch membrane. Due to the potential danger from high-voltage capacitors, expertise is needed for installation. Confirm your device's model number for compatibility before purchasing.