Product DescriptionSpecifications: Working voltage : 3.5-12 VItem size : 37 X 41 mmSpeaker  : 1pcs 0.5W-10W ( Excluding in the package ) Package Listing: PCB x110K variable resistor x1Potentiometer knob housing x1Pin 6-pin1K resistor x110 ohm x1104 ceramic capacitors x2DIP8 IC socket x1LM386 x1DC005 Block x13MM LED x110UF Capaci..

Product DescriptionParameter: Specifications: 35*60*1mm(length*width*thickness)Operating voltage: DC 12V Welding step: 1. Solder 14 resistors, 2 diodes, 3 zener diodes. Do not solder in the wrong place; pay attention to the positive and negative electrodes when welding diodes, and use the negative electrode for the white side. It is ..

Product DescriptionDescription: There are a total of 7 strings. When the string is cut, the buzzer sends out the corresponding sound level.When the string is cut, the LED of the string is lit up. There are a total of 7 LED.Play two pieces of music stored by buttons.Switch middle and high bass. Package Included:1 x DIY Single Chip Mic..

Product DescriptionDescription: NE555 circuit and peripheral components constitute a multi-resonator. The output waveform is rectangular wave. By adjusting the duty cycle of the output rectangular wave, square wave can be formed. Further more, the output waveforms can be processed by integral transform circuit. The output waveforms include squ..

Product DescriptionSpecification: Working voltage: 5V.Standby current: ≤ 1mA.Working current: ≤90mA.Standby light: Yes.Extended time: adjustable 3 seconds to 130 seconds.Trigger mode: touch.Board size: 38.5mm x 28.5mm Package Included: 3 x Touch Delay Light..

Product DescriptionDescription: S66E type all silicon six tube super heterodyne radio teaching kit (with indicator light)S66E suite with 6 tube super heterodyne reception, debugging convenient. Stable.It is a good training kit for each skill school and radio enthusiast, and is equipped with a detailed instruction manual.S66E type all silicon s..

Product DescriptionDescription: Hearing aids are a kind of sound enhancement products to help deaf people or elderly people; students can also use them as reading aids to amplify their voices when reciting texts in English, which helps to concentrate.Now our store is introducing a set of hearing aids made of discrete components, which is suita..

Product DescriptionDescription: This suite converts sound signals into radio signals, and restores sound to another place by wireless means using a normal FM radio.It is interesting and can also learn electronic technology to improve practical ability.The following are common uses: wireless microphones, wireless broadcasting, wireless hawking,..

Product DescriptionParameter: Working voltage: 12VInput current: greater than 100maMotherboard size: 3CM*7CMSensor board size: 5.3CM*1.9CMLoad: 250V 10A AC or 30V 10A DC (currents below this range can be used)Module function: detecting the humidity of the soil, the relay will act or reset according to the humidity of the soilAdvantages introdu..

Product DescriptionDescription: This suite converts sound signals into radio signals, and restores sound to another place by wireless means using a normal FM radio.It is interesting and can also learn electronic technology to improve practical ability.The following are common uses: wireless microphones, wireless broadcasting, wireless hawking,..

Product DescriptionParameter: Working voltage: 12VInput current: greater than 100maMotherboard size: 3CM*7CMSensor board size: 5.3CM*1.9CMLoad: 250V 10A AC or 30V 10A DC (currents below this range can be used)Module function: detecting the humidity of the soil, the relay will act or reset according to the humidity of the soilAdvantages introdu..

Product DescriptionDescription: Three-person voting device, designed with 74HC00 + 74HC10, three judges each control one of the three buttons S1, S2, S3, with the principle of minority subordinate to the majority of voting events, press agree, otherwise disagree. If the vote is passed, the LED will light up, otherwise it will not light up.Circ..

Product DescriptionFeatures:The appearance is compact and the shape is novel.It has high sensitivity, low noise and strong anti-interference ability.Support for global frequency band (76-108MHZ).Built in rechargeable lithium battery and charging circuit, charger can be charged with mobile phone charger.With working indicator (blue), charging indica..

Product DescriptionParameter: Working voltage: 12VInput current: greater than 100maMotherboard size: 3CM*7CMSensor board size: 5.3CM*1.9CMLoad: 250V 10A AC or 30V 10A DC (currents below this range can be used)Module function: detecting the humidity of the soil, the relay will act or reset according to the humidity of the soilAdvantages introdu..

Product DescriptionFeature: Working voltage: DC3.3-5V or 3*AA batterySpeed: AdjustablePCB size: 74.4 x 43.7 x 24mmColor: Blue LEDManual:  Package includes: 1 x DIY Blue LED Electronic Hourglass Kit..