Quick connections, sediment and carbon in-line (with scale inhibiting phosphates) Quick connections: pre carbon in-line Quick connections: RO membrane in line Quick connections: post carbon in line UV lamp immersed in the cold water tank to prevent growth of microorganisms UV Control unit with Beep warning when malfunction All-in-one: Extra hot button 3 faucets: hot/cold/RT Futuristic design Digital display Clock and timer Hot and cold temperature control Stainless steel tanks External resistance heater (band) POU or bottle option