Special Fast & absolutely clean in operation.Using 1 KVA & 3 KVA Instant Start Metal Halide Tube for Fast Exposure.Control with Fully Automatic Digital Timer with Light Sensor.Features: Features:Instant StartEnergy Saving Dual Stage Vacuum SystemBuilt-in Vacuum SensorUser Friendly Microcomputer for Accurate Exposure ControlSpectrally Matched Photo SensorRugged Storage Drawers