Part Number: 10HD16A (No description) Part Number: 10HD17 (Switch) Part Number: 10HD18 (Control test cap) Part Number: 10HD18A (No description) Part Number: 10HD19 (Indicator light) Part Number: 10HD20A (No description) Part Number: 10HD22A (No description) Part Number: 10HD24A (No description) Part Number: 10HD28A (No description) Part Number: 10HD35 (Control capsule) Part Number: 10HD42 (Control capsule) Part Number: 10HD45 (Control capsule) Part Number: 10HD49 (Control capsule) Part Number: 10HD51 (No description)