Note:Recommend to usd with in-Wall tank system NCD15, Voltage: 220V / 50Hz. Function intro: General / Bidet / Reciprocating cleaning / Water temperature adjustment / Water pressure adjustment / Position adjustment / Nozzle self cleaning / Soft lighting / Energy-saving / Seat temp / Seat temperature adjustment / Dry / Deodorization / Air temperature adjustment / Non-electric flushing / Remote control .