Features: * Low water pressure starup function * Instant water heating, 3-5 seconds supply hot water * Double ignition pin,Water control automatic impulse ignition by Water-gas interlock valve * Flame out failure protection , Anti-dry combustion * Over heating and 20 minutes timer protection device * Panel in new and good design, Metal with coating/ glass/ stainless steel optional * Winter-summer switch for gas saving * Good pulse ignitor to keep the battery funtional in one year. * Excellent heat exchanger asorbs heat more efficiently. * Special Cold and hot water convert.Gas Water Heater manufacturers website:http://www.chinagasboilers.com/gas-water-heater/