Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle
Crystal oscillator
This source uses LEDs and an unsteady oscillator to control the switching duty cycle, and an effective IR illumination output.
Oil-immersed Distribution Transformer, its HV level is 20kV, LV is 400V, its capacity is 2500kVA and below. Generally installed on the pole or in the distribution room, for lighting or power supply, three-phase power supply, fully sealed tank structure, to ensure the transformer safe and reliable operation.
20Kv Transformer,20Kv Distribution Transformer,20Kv Oil Immersed Transformer,High Quality 20Kv Transformer
Hangzhou Qiantang River Electric Group Co., Ltd.(QRE) , https://www.qretransformer.com