The TL401940241TM is a type of Omron Solid State Relay (SSR). It is a zero-crossing SSR suitable for control of AC loads up to 40A at 230VAC. It has a high-grade SSR with 4-pin terminals, capable of providing fast response times and improved durability. This type of relay provides higher insulation resistance, higher dielectric strength, and improved surge surge performance. Additionally, it has a built in LED display for diagnostics and troubleshooting.