Image Item No. Description  x1161cx1  Electric Sensor, Light 4.5V (Optosensor) Catalog: Parts: Electric  2980c01  Electric Sensor, Temperature with Short Lead Catalog: Parts: Electric  x1167cx1  Electric Sensor, Touch 4.5V Catalog: Parts: Electric  2974c01  Electric Sensor, Touch with Non-Removable Lead Catalog: Parts: Electric