titan scr2 n-120 electric tankless water heater 220 volts rung shop the titan n-120 tankless water heater combines the small size to be installed almost anywhere with the power to provide endless hot water to a whole house, and the toughness to last many years. this makes the titan n-120 the ideal tankless water heater for your house or apartment. the scr-2 titan n-120 is a versatile and reliable tankless water heater that can be used either as a point of use or to supply unlimited hot water to a whole apartment or small house by just adjusting the power with two buttons: up (red) and down (blue). that is, the user selects the temperature and energy utilization according to the water application being used. the smart electronic board of the titan n-120 controlled by a microcontroller adjusts itself to provide on- demand hot water in a more efficient way as compared with the conventional water heaters.