Cheap And Discounts DC20A 50A 100A 500A open loop transmitter Hall current sensor transducer with 4-20mA 0-5V 0-10V analogy signal output JXK-14 Wholesale. Buy Directly From Merchant QiDian Tech Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.