The Ninglu Digital Depth Repeater IR261 is a reliable and accurate instrument designed to measure the depth of water in a variety of applications. It is a compact, lightweight, and easy-to-use device that can be used in both shallow and deep water. The Ninglu Digital Depth Repeater IR261 features a large LCD display that provides clear and accurate readings in both feet and meters. It also has a built-in alarm that will sound when the depth reaches a preset level. The Ninglu Digital Depth Repeater IR261 is powered by a 9V battery and is designed to be waterproof and corrosion-resistant. It is ideal for use in a variety of applications such as fishing, boating, and other water activities. The Ninglu Digital Depth Repeater IR261 is a reliable and accurate instrument that will provide accurate readings in a variety of applications.