Specifications: The APY211G1S is a PhotoMOS SSR optimized for lower-voltage, high-current switching. Rated for 1.7A at 20V (AC/DC) in SOP-4, it has a 0.5Ω on-state resistance and 2500Vrms isolation. Switching times are 1500μs (on) and 50μs (off). It operates from -40°C to 85°C with 1.2-1.4VDC control. Application Scenarios: Perfect for 12V or 24V DC systems. Common applications include automotive accessory control (lights, fans), industrial 24V PLC output modules, battery load switching, and point-of-load distribution in low-voltage DC power systems found in vehicles, boats, and mobile equipment.