Keyless Entry Keypad

The keyless entry keypad is a touch sensitive capacitive sensor. When a finger touches the keypad, it changes the capacitance of the sensor in the area of the finger touch. The keypad is then able to determine which area was touched and sends a ground signal to the RFA  module on the corresponding reference circuit(s). The keypad only works when touched with a finger. The keyless entry keypad may not work when gloves are worn. The gloves act as an insulator and do not allow the finger to change the sensor capacitance. Based upon input from the keyless entry keypad, the RFA  module either locks or unlocks the doors.