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 generatorModel: BE350sensing & input:190-240 VacBurden:500VAOutput -Continuous:73 Vdc at 3.5 Adc (255w)Output - Forcing: (240 Vac Input )105 Vdc at 5 Adc (525w)Regulation:1.0%Exciter Field Resistance:15 ohms minimumRemote Voltage Adjustment Range:10% with 2000 ohm rheostat5% with 1000 ohm rheostatRoll Off Frequency:54-61 Hz for 60 Hz Operation45-51 Hz for 50 Hz OperationOperating Temperature:-40C to 60CStorage Temperature:-65C to +85C Dissipation:8 watts maximumcolor:BlackMaterial: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.