The Sadotech ST-FX-C Model C Wireless Doorbell is a sleek and durable rectangular-shaped doorbell that operates on batteries. Made of ABS plastic and plastic, it is suitable for use in shops, schools, and homes. The white-colored doorbell is wireless and has a voltage of 110V, requiring 2 batteries for operation. Its waterproof and portable features make it convenient for various settings, while the custom style adds a personal touch. With a round button shape and a lightweight design of 0.25 lb, this doorbell from Sadotech is a practical and stylish addition to any space.