Double hot and cold water inlets, five-hole nozzles on the left, shared by men and women, and seven-hole nozzles on the right, exclusively for women. Self-cleaning nozzle function . Notes on the installation of the body wash: Since the water pipe of the body wash is small, the water flow will be low if the water pipe is small , it is impossible to have a large flow of water like a tap, and the use of a gas water heater will bring down the fire! Cooling only: directly connected to the water pipe tap water and flushed with tap water. Hot and cold: one line is connected to an electric water heater and the other line is connected to tap water. The two waterways are mixed to produce hot water. (Be sure to buy water storage type, that is, there is a water tank, do not buy instant heat type, otherwise the effect will not be ideal) Easy to install, no need to buy other accessories. Note: do not buy only one type of cooling and connect it directly to the water heater electric, because the water temperature of the electric water heater is about 55-70 degrees, and the water temperature cannot be adjusted accurately. The water temperature for washing is usually around 35-40 degrees. Unless your electric water heater can be precisely controlled over 30 degrees. What type of toilet can this product install? The hole distance between 136-200mm can be installed. (Length and width do not need to be measured) Accessory set: one 3m long PVC pipe, two T-joints (one copper and one plastic )