Hasegawa Electric Co., Ltd. was founded in 1925 and has been since engaged in development and production of safety equipment of electrical works such as Grounding Devices, Voltage Detectors and Phase Testers. We are pround of being a top maker in Japan of Voltage Detectors from ultra high voltage to low voltage and that our Grounding Devices of AC/DC are used in various scenes and appreciated by the users. Our products shall be kept improved to meet the market requirements: smaller with high efficiency and more stable in output performance by the circuit integration.