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[ Product Parameters ]： 1. Working Voltage: 5V USB power supply, 2. Size dimension: : 100 mm long, 55 mm wide, 3. PCB Material: 1.6mm RF-4 Plate, 4. Installation: DIY soldering assembly, 5. Type: Logic ICs Operating, 6. Temperature: -30-85℃.
[ Product Description ]: Six Functions: 1. Clock function, 2. Timing function, 3. Alarm function, 4. Countdown function, 5. Stopwatch function, 6. Counter function.
[ Presupposition ]: Please read the product instructions carefully and compare the parts and component list which can be obtained from customer service. Remember to attach your order number or full name of the product to avoid confusing the instructions.
[ Applicable Crowd ]: 1. Student of circuit and electronic soldering, 2. Interested in soldering and assembly, 3. Strong hands-on ability, 4. Experienced in soldering,etc.
[ Warning ]: This product needs to be soldered by yourself. If you have no soldering experience, please read the welding instructions carefully and use soldering tools carefully in order to avoid safety problems.If you need instructions or have any questions about the product, please consult customer servic.