Less than 1 % pressure regulation accuracy. 220/380VAC input Sturdy and With low frequency protection function Slow start Built-in 40A fuse Power supply voltage: 180-276VAC Sampling voltage: 220/380V switch by jumper Excitation output: voltage max. 170VDC 240V Current: Continuous: 20A Non-continuous: 40A 10 seconds Resistance Minimum 6 ohms, maximum 100 ohms Voltage regulation accuracy: less than +/- 1% (frequency variation within 4%) Voltage build-up: residual voltage must be 5V25 Hz External voltage regulation: maximum +/-10% 1KQ1W Potentiometer voltage settling time: 4 seconds Maximum static power consumption: 8 W : Built-in harmonic suppressor Colour:Black Material:Plastic + Metal Package Contents: 1 x Automatic 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.