This illuminated rain gauge lights up with 3 LED lights when you point any infrared remote (most TV remotes) at it and hold down any button on the remote. The light stays lit for 6 seconds and automatically shuts off. Bright markings. Great for 24 hour viewing. High-visibility float and water magnification. Uses 2 "AAA" batteries (included). DebrisGuard funnel prevents debris from entering. Easily mounts in ground or to deck fence. Rust-resistant bracket included. 1.25 lb. Height: 20.5".