It is small size, light weight,resistant and strongWith the functions of Low-frequency protection and voltage slowly established,EMI suppression circuitSuitable for generators,can adjust the voltage slightly to stabilize the output voltage of the generatorWhen the remanence voltage is greater than 4 v / 25 hz,the Voltage will be set automaticallyModel: GB160CGB160C single phase 220V with external adjustmentcolour:As shownMaterial:Metal + PCPackage Contents:1 x Voltage RegulatorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.