The Autowave Keyeasy Universal Transponder Case in Black is designed to house transponder chips, which are essential for your vehicle's immobiliser system. These chips, made of carbon or glass, either integrate with the PCB or are housed separately within the key. Transponder chips establish a secure connection between your vehicle key and the car via an aerial near the ignition barrel. The case has dimensions of 2.00cm x 7.00cm x 13.50cm and weighs 0.01kg.