Finder 9980 series indicator emc suppression modules finder 9980902499 this finder 9980 series module contains a free wheel flyback diode to protect relay driver circuits from negative going voltage spikes a green led shows when the coil is energized the module is designed to fit into a compatible socket together with the relay it suppresses this emc suppression and indicator module is compatible with the following sockets and relays screw sockets 84842 94541 94823 9484