Cheap And Discounts New Safety door switch D4NL-2CFG-BS D4NL-1CFA-B D4NL-1CFA-BS D4NL-2CFA-B D4NL-4CFA-B D4NL-2CFA-BS D4NL-4CFG-B Wholesale. Buy Directly From Merchant Xiaomi Mifun Smart Home Store Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.