Cheap And Discounts 4pcs New limit switch D4N-2220 D4N-2A20 D4N-2B20 D4N-1120 D4N-2120 D4N-9120 D4N-6122 Wholesale. Buy Directly From Merchant Robot Parts Industrial Shop Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.