this is a set of mechanical key control panel set dedicated to range hoods. It belongs to the control panel series. It consists of a key operation panel above and a power control motherboard below. It is the core control component of household range hoods. The upper key panel is equipped with a transparent protective shell, equipped with solid keys, marked with power supply, low-grade, medium-grade, high-grade and lighting function signs, intuitive operation, clear hand feeling, suitable for long-term use in kitchen oil environment. The control motherboard below integrates a power conversion circuit and a relay control module, which can convert household 220V AC power into low-voltage power required by the equipment, and control the high and low speed operation of the fan and the on and off of the lighting circuit through the relay. At the same time, it has overcurrent and overvoltage Protection function. Onboard RoHS environmental protection certification logo, in line with export standards, adopts universal interface design, adapts to most mainstream brands of range hoods, and is a universal replacement accessory for production and after-sales maintenance.