Finder 9902 series indicator emc suppression modules finder 9902906099 this finder 9902 series emc suppression and indicator 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 protects fits screw socket 9002 9003 9203 9402 9403 9404 9503 9505 9602 9604compatible with finder rela