A weatherproof external magnetic antenna for your iPro controller, DT3D, or FIBOX sensor. It has a magnetic base on a 3 ft. cable. Stick it to anything magnetic to receive a better signal. This antenna is tuned to provide maximum range for your iPro controller, DT3D, or FIBOX style sensor. Please note this type of antenna can only be used on a iPro Controller, DT3D, or FIBOX style sensor iPro. It can not be used on pyramid style iPro sensors.