Image Item No. Description By  4755  Electric Plate 1 x 2 with Contacts Catalog: Parts: Electric 3  879  Electric Sensor, Touch Catalog: Parts: Electric 6  879c02  Electric Sensor, Touch with Red Contact Catalog: Parts: Electric 53  879c03  Electric Sensor, Touch with White Contact Catalog: Parts: Electric 54  879c04  Electric Sensor, Touch with Yellow Contact Catalog: Parts: Electric 44