Viking Topaz 20, 30, 50 Thread Sensor Brand New 413004005

Viking Topaz 20, 30, 50 Thread Sensor Brand New 413004005 This is a Brand Thread Sensor to work with the  Topaz Series  Sewing Machine.   Due to the sensativity of these boards, There is absolutely no return and should be installed by trained tech:                 "PLEASE READ BEFORE ORDERING--THERE IS NO RETURN OR REFUND ON THIS PCBD." Part# 413004005