... 5mmHole dimension 164*113mm Type Function HMIPLCXP1-18R-C10DI/8DO(relay), 24v power, OP clocksimilar to XC1XP1-18T-C10DI/8DO(transistor ... OP clockXP1-18RT-C10DI/8DO( 4 relay,4 transistor), 24v power, OP clock XP2-18R-C10DI/8DO(relay), 24v, 2 channels AB-phase counter ... Canwork with 2 expansion BD cards. XP3-18R-C10DI/8DO(relay), 24v, 3 channels AB-phase counter, 3 channelsexternal interruption. XP3-18T ...