The SMD-112 S Model 112 likely refers to Sanyou Corporation Limited’s SM-S-112DMP1-F or SM-S-112DM series, which are miniature 12V DC high-power relays used in industrial applications. These surface-mount or through-hole components operate within a -40°C to +100°C range and are designed for reliable signal switching. Review technical specifications at Alldatasheet . SM112N 2018 - Beyma