Dental Chair with Foot Switch works on 550-800 Kpa. Air pressure and 200-400 Kpa. Water pressure. The Dental Chair requires 220V.50 Hz voltage to operate efficiently and easily cleanable, scratch proof and chemical resistant detachable glass cuspidor bowl. Dental Chair is provided with soft touch membrane pad and halogen light with glass reflector. Universal Eangineering Co. Manufactures Dental Chair with Foot Switch.