Cheap And Discounts 10PCS 100% New original HW-300A imported sensor 4 feet high sensitivity InSb Hall element D sensitivity D Asahi Kasei AKM 7 Wholesale. Buy Directly From Merchant Shop5782197 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.