Limit switches are an essential component of any gate opener system. These switches are responsible for communicating with the motor to stop it from moving the gate too far in either direction. When the cam or lever reaches the limit switch, it triggers the switch to close, which then sends a signal to the gate motor to stop. This prevents the gate from hitting the posts or derailing, which can cause damage to the gate and the surrounding area. It is important to choose the correct limit switch based on the make and model of your gate opener to ensure proper operation and prevent potential issues.