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Power supply voltage: DC9V
1. All kinds of component marks are printed on the PCB, please solder according to the marks.
2. The resistance does not distinguish the direction, only the resistance value is distinguished, please pay attention to resistance value when welding.
3. The positive and negative poles of the polyester capacitor part, electrolytic capacitors, LED lights, buzzer are divided into positive and negative poles, the long feet are positive +, and the short feet are negative -, please pay attention to the marking direction on the PCB when welding.
4. The red wire is positive +, the black is negative -, and the green and white parts are positive and negative. Please pay attention to distinguish when welding to avoid wrong connection and reverse connection.
1 x DIY KIT