Used but works great comes complete please see photos

The Poolguard PGRM-SB Above Ground Swimming Pool Safety Buoy is a modern and stylish square-shaped pool alarm designed for child safety. Made of durable vinyl material, this red buoy has a mesh shape and features a magnetic sensor for added security. It is UV protected and comes with a vinyl coating finish, making it resistant to the elements. The buoy requires no additional parts for assembly and is easy to install, providing peace of mind for pool owners looking to ensure the safety of their children while swimming.

see pictures for more details, new complete set