Image Item No. Description By  4755  Electric Plate 1 x 2 with Contacts Catalog: Parts: Electric 20  4757  Electric Plate 2 x 4 with Contacts Catalog: Parts: Electric 2  4758  Electric Plate 2 x 8 with Contacts Catalog: Parts: Electric 2  58122c01 (Inv)  Electric Power Functions 9V Remote Control Unit with Dark Bluish Gray Bottom (58122c00 / 58135) Catalog: Parts: Electric 4  95652  Electric Sensor, Ultrasonic - EV3 Catalog: Parts: Electric 1