MMTC 1KXS Nema 4 Exterior Tamperproof Open-Close Key Switch With Stop Button Surface Mount NEMA 3R, 4, 12 o SURFACE MOUNT o TAMPER-PROOF o TWO POSITION (OPEN-CLOSE) WITH STOP BUTTON o CENTER OPEN-CLOSE with Center Return Key Switch with Stop Button, Mortise Cylinder, Tamperproof, H=4-3/8, W