hear that GESTER is a trusted toy,

Superior product quality is what we have been concentrated on: we have passed ISO 9001 and SGS certification, and our testing machines are supplied with CE and ISO 17025 calibration certificates. So, reliable product quality is ensured.

kind of power supply

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You can use relevant electrical devices to manually change the mains supply's voltage between 110V and 220V (50Hz or 60Hz) so as to power our testing equipment.