Product Introduction To be used in bad condition : high noisy, heavy damp.such as electrical factory, coal mining, As the explosive , inflammable conditions with gas, coal dust 1.can be amplified....
Shandong China Coal Industrial& Mining Supplies Group Co., Ltd ( hereinafter referred to as china coal) is a group company, which is a collection of e-commerce, machinery manufacturing, software, ....
ST220 Line Tester FEATURES 1.DTMF applying to GB/ T15279-942.Dialing number display3.Checking wire pairs function4.Dangerous voltage alarm5.Test line insulation, break faults 6.Low voltage warning, ....
As a mainstay enterprise of China communication maintenance, Senter Electronics Co., Ltd, apply itself to the development, manufacture and distribution of communication maintenance instruments & ....