1. Disconnect all power sources (AC and DC). Cut the opening of the installation position using the provided template. 2. Connect the green wire to one end of the float switch and the other end to the positive terminal of the pump. Connect the brown wire to the positive terminal of the pump. 3. Connect the blue wire to the negative terminal of the pump. Connect the red positive wire to the DC power supply battery, and the black negative feeder to the DC negative (battery or bus). 4. Secure the switch panel with self-tapping screws. Reconnect all AC and DC power supplies, open and close all branch circuits, and check whether the panel is operating properly. 5. When the switch is in the manual position (MAN), the MAN indicator on the switch will illuminate, indicating the pump is running. The pump will operate regardless of water level (use with caution). When the switch is in the automatic position, the AUTO indicator on the switch will glow. If the water level rises above the float switch, the pump will activate with an audible sound, and the indicator light will turn on. Item Name: Bottom Pump Switch Panel Circuit Protection: 20A resettable circuit breaker Rated Voltage: DC12V 20A / 24V 10A Panel Depth: 7.5 cm Installation Size: 10.3 x 4.3 cm Waterproof Rating: IP66 Dimensions: 5.4 x 4.8 x 11.4 cm Material: Plastic Color: Black Package Contents: 1 x Panel 4 x Screws 1 x Stickers 1 x Instruction Manual Note: Lighting and display settings may cause slight variations in the color shown in the image compared to the actual item. Measurement error is permitted within +/- 1-3 cm.