The LR433T2 with SAW Resonators SMD (Surface Mount Device) RoHS manufactured by LADDER is an electronic part designed to be used in low-power wireless conditions for radio frequency integration. It is a crystal oscillator module with leds inside for indication. The LR433T2 is RoHS (Restriction on Hazardous Substances) compliant, meaning it is free from hazardous substances such as lead and cadmium. It is also equipped with a SAW resonator, or surface acoustic wave resonator, which increases its efficiency and stability, and reduces noise when compared to other types of resonators. This electronic part provides excellent performance and a long lifespan, making it a popular choice for uses in everything from consumer electronics to industrial applications.