In Keeping with the reliability and performance of our classic Titan-ATC Electronic Tankless Water Heater, we have developed the newer and more advanced TITAN-SCR2. The new TITAN-SCR2 Digital Tankless Water Heater incorporates new space age technology and features a faster and more accurate temperature sampling system, a manual resetable thermostat and a new air/water deferential analyzing system to prevent dry starts, (which is a key problem for other tankless systems.) By heating water only as it is needed the TITAN-SCR2 Digital Electronic Tankless Water Heater eliminates the need for bulky water heaters that heat water continuously. This can reduce hot water costs up to 60% over conventional electric water heaters. The TITAN-SCR2's high efficiency is in part due to its dedicated digital microprocessor that samples input and output temperatures 21 times per second. This power control system analyzes the data and manages power usage for maximum efficiency and temperature stability. At rest, the TITAN-SCR2 uses no power at all.