ADVANTAGE 1. Motorized front window. 2. Time reserve function. 3. HEPA filter life and UV life indicator. 4. Automatic air speed adjustable with filter block. 5. With memory function in case of power-failure. 6. Audio and visual alarm (Abnormal airflow velocity; Filter replacement; Front window at unsafe height). 7. Work area surrounded by negative pressure, it can ensure maximum safety in work area. 8. Audio and visual alarm (Filter replacement, window over height, abnormal air flow velocity etc). 9. Remote control: all functions can be realized with it, making the operation much easier and more convenient. 10. Interlock function: UV lamp and front window; UV lamp and blower, LED lamp; blower and front window. 11. Foot switch: adjust front window height by foot during experiment, to avoid airflow turbulence caused by arm movement.