HH-RR-503S is designed for laboratory-level gas water heater performance testing. It supports full performance verification of water heaters in the power range of 0-40kW, and integrates 30+ core indicator tests such as thermal efficiency (accuracy ±0.8%), hot water output rate (resolution 0.1L/min), and safety protection (flameout response ≤30s). It uses imported high-precision sensors and intelligent measurement and control systems, complies with GB 6932 and EN 61326 international standards, and automatically generates full-item test reports. It is a professional testing platform for water heater manufacturers, scientific research institutions and third-party laboratories.