The Residential Single-Phase All-In-One Energy Storage System PP-S2 (3.6-10kW / 4.99-19.9kWh) is a compact, quiet (<25dB), and scalable home energy solution. Featuring built-in aerosol fire suppression, AFCI support, <10ms EPS switching with full house backup, and plug-in terminals for 75% faster installation, it supports up to 5 units in parallel. With built-in meter function, -20°C heating, IP65 protection, and UL9540A compliance, it delivers safe, reliable, and flexible performance for residential applications.