It is small size, light weight,resistant and strong With the functions of Low-frequency protection and voltage slowly established,EMI suppression circuit Suitable for generators,can adjust the voltage slightly to stabilize the output voltage of the generator Model: BE350 sensing & input:190-240 Vac Burden:500VA Output -Continuous:73 Vdc at 3.5 Adc (255w) Output - Forcing: (240 Vac Input )105 Vdc at 5 Adc (525w) Regulation:1.0% Exciter Field :15 ohms minimum Remote Voltage Adjustment Range:10% with 2000 ohm rheostat 5% with 1000 ohm rheostat Roll Off Frequency:54-61 Hz for 60 Hz Operation 45-51 Hz for 50 Hz Operation Operating Temperature:-40C to 60C Storage Temperature:-65C to +85C Dissipation:8 watts maximum color:Black Material:Metal+PC Package Contents: 1 x Voltage Regulator Only 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.