Image 1 of 2 Image 2 of 2 Additel 9021 - One set Test leads for Additel calibrator (one red lead and one black lead and two clips) $111.00 Add To Cart Added! Additel 9021 - One set Test leads for Additel calibrator (one red lead and one black .Part Number: 9021. Additel 9021 - One set Test leads for Additel calibrator (one red lead and one black .Part Number: 9021. You Might Also Like Additel 100 Adapters for ADT710 from $272.00 Additel 9063 - PA profibus, FF (Foundation fieldbus) communication module for ADT227-HART $5,381.00 Additel ADT928A-MK - Maintenance kit for Additel 928A pump $129.00 Additel ADT901B-N2-KIT - Test kit for Additel 901, 901A, or 901B (Hose barb fitting, hose, etc), 1/2 NPT M $239.00 Additel 9084 - External reservior connection components for ADT793 controller (Includes 2 pcs 1.5m × 6mm hoses) $239.00