Recently, Xiamen Toptec Electronics CO.LTD ‘s Top - 904 relay comprehensive parameter test instrument has been selected by the Suzhou Rail Transit、Hangzhou Rail Transit respectively as the relay test instrument supplier.

TOP-904S relay comprehensive parameter test instrument has friendly human-machine interface, and powerful function. It can test one 4formA or 4formB or 4formC different type dc(ac) relay every time ,and  basically meet the testing needs of all kinds of relay production or use.