The Responder 7251p programmable remote is a direct replacement for the (transmitter/receiver) remote that came with your Python 872 security system, 4202P/5202P Remote Car Starter. This multi-function, 5-button remote communicates with your alarm system, sending commands and receiving confirmation and status information, which it displays using subtle LED "ghostlights." You'll have access to all your system's features, just like your original remote.