1、EXCELLENT DURABILITY: Gauge is made with a stainless steel 316L bezel and anti fog glass, providing outstanding anti fog and waterproof performance. With a dial waterproof rating of IP67 and a back cover rating of IP5, it can be used long term even in frigid seawater conditions. 2、ACCURATE DEPTH INDICATION: The boat depth gauge can indicate a maximum depth of 100 meters, allowing you to quickly understand the depth of the water under your boat. 3、STABLE PERFORMANCE: The polished stainless steel bezel, dome glass lens, and white backlight design, together with the buckle design for the wire harness, ensure a rugged connection and normal working even under intense vibration. 4、CLEAR DISPLAY: The LCD display comes with a backlight that makes it easy to check while boating at night. The display features high precision, versatility, reliability, stability, and simplicity. 5、VERSATILE USAGE: Not only is the Gauge easy to install, but it also comes equipped with alarm functionality for flexible and simple use. It is suitable for yachts, small and medium sized boats, fishing boats, and other types of marine vessels. Item Type: Boat Depth Gauge Material: Stainless Steel 316L Bezel + Anti Fog Glass Installation Hole Diameter: Approx. 52mm / 2 inches Voltage: +12VDC Depth Range: 0-100m Operating Current: ≤60mA Special Function: Waterproof Protection Grade: IP67, Back Cover IP5 Operating Temperature: -30-+75°C Storage Temperature: -40-+85°C Wiring: 1. Red Wire - +12VDC 2. NC 3. Orange Wire - Backlight (+) 4. Blue Wire - Power Negative (-) Installation Steps: Step 1: Drill a 52-53mm diameter circular hole in your center console or other pre installed location, ensuring there is at least 70mm of space behind the panel. Step 2: Insert the gauge into the hole. Step 3: Align the bracket screw holes with the screws on the back of the gauge, then tighten the screws, use the bracket and frame to clamp the panel tightly. Step 4: Directly insert the power harness into the back of the gauge, then connect the corresponding sensor and harness according to the provided instructions and turn on the power. 1 x Depth Gauge 1 x Power Cord 1 x 10M Depth Line 1 x Fixed Base 2 x Screws 2 x Nuts 1 x User Manual