The Protime Elite transponder is recommended for fast vehicles (cars, motorbikes ...). This transponder is delivered with a NiMH battery or with a direct connection to the vehicle's battery. When the transponder is in the charger, the power down is automatic, which offers an autonomy of several months. Only one charge per year is necessary to maintain the transponder in condition. The information on the level of charge is sent to the decoder when the transponder passes over the loop. The rechargeable transponder has a 5 days autonomy when it is continuously used.