【UPGRADE & SUPERB DEVICES】- Power: 36KW; Hot Water Output: 18L/min(4.3 GPM); Gas Supply: LPG(Liquid Petroleum Gas);This tankless water heater propane is made of stainless steel case and inner copper devices, making it anti-rust, high-temperature resistant, no water leakage, and durable. It comes with a portable gas regulator, a water filtration device, and a shower head kit. 【6-IN-1 SECURE PROTECTIONS】- The propane water heater is equipped with six protection ways to ensure your security on the shower, such as over 75 ℃(167 °F) protection, low water flow protection, anti-frozen protection, over water pressure protection, no flame protection, 20min timer, etc. No need to worry about any unexpected flame out or cold days.