EXTRA FEATURES OF PRODUCT 1-The SELEN Electrical Water Heater is well designed, doesn't occupy many place and it's easy to use allows momentary heat water. 2-The SELEN Electrical Water Heater is distinguished into three classes: A-Bath model water heater B-Kitchen model water heater C-Shower model water heater 3-The device is able to function at low water pressure, at normal city water pressure of water tank, which must be installed 250 cm. above the device. 4-Misuse all device creates possibility of damaging resistance. The basic advantage of SELEN of all that damaged resistance can be substituted by a new one according to instruction and pictures on ' Maintance and Changing of Resistance ' page, it avoids taking away device from it's place and operation can be produced by owner. 5-The power of device is compatible with electric wiring in apartments of electric wiring contains cable with 2,5 mm2 cross section area, there is no need for substitution of old electric wiring. 6-All the accesories and extra parts are included.