1. Less than +/-0.5% Reglation2.220/400 VAC Programmable Input3.Rugged Design4.With Under Frequency Protection; Soft Start Voltage Ramping5.EMI Suppression; Buit-in High Capacity 8Amp FuseInput Voltage: 220/400VAC, 1 phase 2 WirePOWER INPUTVoltage:180~240V, 1 phase 2 WireOutput Voltage: Max 90V dc @240V ac inputCurrent: Continuous 15AIntermittent 20A for 10 secsResistance: 10 ohms min 100 ohms MaxRegulation+/-0.5% with 4% engine governingVoltage -up:Residualvolts at AVR teminal 5VACSOFT START RAMP TIME3 secondsEXTERNAL VOLTAGE ADJUSTMENT+/-7% with 1 k ohm 1 watt trimmerUNIT POWER DISSIPATION8 maximumThermal. Drift:0.05% per C chage in AVR Under Frequency:60Hz system presets knee point at 57Hz50Hz system presets knee point at 47HzOperating Temperature:-40C to + 65CStorage Temperature:-40C to + 85CRelative Humidity: Less than 95%Material:plasticcolour:Photo ColorPackage Contents:1 * GAVR-20A Automatic Voltage Regulator1 * English manualOnly the above package content, other products are not included.Note: Light 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.