zero pressure. 6 ltr instant water heater. Saves 70% of energy cost. Features: 1. Instant gas water heater. 2. Works on Loft tank as well as Terrace tank with 100% safety. 3. Automatic Electronic Ignition . 4. Flame failure device. 5. Over heating protection device. 6. Over heating pressure protection device. 7. Can start again manually by restarting hot-cold switch or by shutting water inlet and starting water again. 8. Chimney styled smoke exhaust device. 9. Saves 70% of energy cost. 10. Summer and winter option. Brand Sunshine SKU 100166002_NP-1020417011 Water Heater Type Tankless/Demand-type Model F606