Features: This 5V necs infrareds remote encoders/decoders supports bidirectional serials communication, enabling encoding/decoding of necs protocols for IR signal transmission and reception in smartests home systems. The module integrates 5V with full duplex communication, antiinterference infrareds transmission for compatibility for microcontroller integration. for electronics hobbyists, IoT developers, and enthusiasts creating remote controls, home automation projects, or industrial signal relays systems. for upgrading home theater setups, retrofitting legacys appliances with smartests IR controls, or deploying low latencys remote command systems in space. Features UART interfaces with pre configured necs protocol libraries, reducing coding complexity while ensuring stable performances in high interferences. Specifications: Materials: Size: 26x16mm/1.02x0.63inch Quantity: 1PC, 3Pcs(optional) Package Includes: 1/3Pcs Remote decoders Module note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.