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DC 24V 100dB Electronic Alarm with Strob Red Light, High Decibel Electronic Beep Buzzer for Car Alarm Home Security System DC 24V 100dB Electronic Alarm with Strob Red Light, High Decibel Electronic Beep Buzzer for Car Alarm Home Security System Description:   BJ-3 is a DC 24V 100dB Audible Visual Alarm. It works as Red Flashing and High Decibel Buzzer after power ON. It can be used for on-site audible and flashing alarms. Features:   Loud Sound Alarm Wit... $4.19
$5.99 SKU: GY20964-1
$4.19
$5.99
 31

ESP-12F ESP8266 Serial Wireless WIFI Module ESP-12F ESP8266 Serial Wireless WIFI Module 1.Description:   The ESP-12F is a powerful and versatile module, with a wide range of applications. It can be used to create wireless networks, build smart homes, and enable the transmission of data between a variety of devices. I... $3.91
$5.59 SKU: GY20981-1
$3.91
$5.59
 30

DIY Kit Capacitor Three Point Oscillation Circuit DIY Kit Capacitor Three Point Oscillation Circuit 1.Description:     This DIY kit provides an excellent learning opportunity for electronics enthusiasts and students. It enables you to build a three-point oscillation circuit by connecting capacitors, resistors, and transisto... $3.75
$5.35 SKU: GY20973-1
$3.75
$5.35
 30

SMD Component Soldering Practice Board with 555 and CD4017 ICs DIY LED Water Lamp Kit SMD Component Soldering Practice Board with 555 and CD4017 ICs DIY LED Water Lamp Kit Description:   1.Perfect your soldering skills with this SMD practice board DIY kit. Made with high-strength, fire-proof, and anti-fall materials, this kit is easy to assemble and disassemble for repeated use. With separate practi... $2.79
$3.99 SKU: GY20966-1
$2.79
$3.99
 30

DC 5V Single Digit DIY Electronic Counter Kits for Soldering Learning Practice School Teaching Training DC 5V Single Digit DIY Electronic Counter Kits for Soldering Learning Practice School Teaching Training 1.Description:   The Counter Electronic Kit is designed for easy installation and operation, allowing you to quickly understand the basic principles of digital counter. The kit comes with a detailed and comprehensive instruction... $4.89
$6.99 SKU: GY20972-1
$4.89
$6.99
 31

Gradient LED Water Flowing Lamp DIY Electronic Kit Fun LED Light Soldering Practice Kits Gradient LED Water Flowing Lamp DIY Electronic Kit Fun LED Light Soldering Practice Kits 1.Description:   1>.Create an impressive lighting display with this RGB LED flow light kit. Its circular design and adjustable speed make it perfect for adding an eye-catching effect to any space.   2>.This LED flow... $4.45
$6.35 SKU: GY20970-1
$4.45
$6.35
 30

DIY Kit NE555 8-Channel Digital Responder CD4511 8Bit Answering Board for Soldering Practice DIY Kit NE555 8-Channel Digital Responder CD4511 8Bit Answering Board for Soldering Practice 1.Description:   This is an 8-way answering kit with 9 keys, 8 answering numbers, and 1 answering reset. After powering on, the nixie tube displays 0 to start answering. Which of the 8 keys was pressed first, the nixie tube immedi... $4.19
$5.99 SKU: GY20959-1
$4.19
$5.99
 31

DIY Kit Voice Control Lamp LED Melody Light DIY Electronic Kits DIY Kit Voice Control Lamp LED Melody Light DIY Electronic Kits 1.Description:   The voice controlled LED melody light circuit consists of a power supply circuit, a microphone amplification circuit, and an LED light emitting indicator circuit. The power supply is input by J1, and C1 filtering ... $2.09
$2.99 SKU: GY20958-1
$2.09
$2.99
 31

DIY Kit NE555 CD4017 LED Electronic Light Red Blue Dual Color LED Strobe Flashing Light Electronic Kits DIY Kit NE555 CD4017 LED Electronic Light Red Blue Dual Color LED Strobe Flashing Light Electronic Kits 1.Description:   This kit uses NE555 and CD4017 chips to form an analog alarm light circuit. The blue LED and red LED flash alternately according to the pulse, and the flash frequency can be adjusted by adjusting RP1. The working ... $2.09
$2.99 SKU: GY20957-1
$2.09
$2.99
 31

DIY Kits Intensive Pin SMD Soldering Practice Board Water Lamp Analog Circuit Electronic Kits SMT Skill Practice DIY Kits Intensive Pin SMD Soldering Practice Board Water Lamp Analog Circuit Electronic Kits SMT Skill Practice 1.Description:   This is a dense pin full chip welding exercise board DIY welding kit flow light, dedicated for training in four new technologies. After welding, the LED rotates clockwise and turns on in turn. Chip IC welding is f... $4.89
$6.99 SKU: GY20954-1
$4.89
$6.99
 31

4 Channel Responder DIY Kit Four Person Responder Electronic Soldering Practice Kits 4 Channel Responder DIY Kit Four Person Responder Electronic Soldering Practice Kits 1.Description:   This is a 4-way preemptive answering fun welding kit that can simultaneously perform 4-way preemptive answering. S1-S4 is the preemptive answering key, and S0 is the reset key. After any one of the power on select... $3.14
$4.49 SKU: GY20953-1
$3.14
$4.49
 31

DC 5V DIY Kit Music Box 16 Kinds Vioce Electronic Soldering Practice Learning Kits DC 5V DIY Kit Music Box 16 Kinds Vioce Electronic Soldering Practice Learning Kits 1.Description:   This is a DIY kit for fun fabrication and assembly of music boxes, which can emit 16 interesting analog sound effects under your control. It is both an electronic kit and can be used as a doorbell or alarm. The co... $3.91
$5.59 SKU: GY20952-1
$3.91
$5.59
 30

DIY Kit LED Circular Lamp DC 5V LED Light Electronic Soldering Practice Kits for Beginners DIY Kit LED Circular Lamp DC 5V LED Light Electronic Soldering Practice Kits for Beginners 1.Description:   This circuit is a blessing ring drive circuit composed of three triodes. Whenever the power is turned on, the three triodes will strive to be turned on first. However, due to differences in components, only one tr... $2.09
$2.99 SKU: GY20951-1
$2.09
$2.99
 31

DIY Kit Electronic Lucky Wheel Sweepstakes DC 3V Lucky Turntable DIY Soldering Practice Kits DIY Kit Electronic Lucky Wheel Sweepstakes DC 3V Lucky Turntable DIY Soldering Practice Kits 1.Description:   TJ-56-10 is a Lucky Wheel Sweepstakes Electronic Soldering DIY Kit.   It can simulate the working state of the lucky wheel very realistically. As the lucky wheel starts, the LED will flash automatically in ... $2.79
$3.99 SKU: GY20943-1
$2.79
$3.99
 30

DIY Heart Shape 3 Colors LED Flashing Light, LED Electronic Soldering Practice Kits for Beginners, Bikes Electric Car Taillights DIY DIY Heart Shape 3 Colors LED Flashing Light, LED Electronic Soldering Practice Kits for Beginners, Bikes Electric Car Taillights DIY 1.Description:   It is a Heart-shaped Flashing Lamp Electronic Soldering DIY Kit. It consists of 18 RGB LED divided into 3 groups.   The three groups of LED are lit in turn after being installed alternately, thus forming... $3.28
$4.69 SKU: GY20947-1
$3.28
$4.69
 31

DIY Kit LM358 Breathing Lamp Blue LED Blinking Light Electronic Soldering Practice Kits DIY Kit LM358 Breathing Lamp Blue LED Blinking Light Electronic Soldering Practice Kits 1.Description:   The function of LM358 breathing light is that the LED changes gradually from light to dark under the control of the circuit, and then from dark to light, which feels like breathing.   It is widely used i... $3.14
$4.49 SKU: GY20946-1
$3.14
$4.49
 31

DIY Kit Light Control Water Flowing Lamp LED Night Cycle Analog Circuit Electronic Soldering Kits DIY Kit Light Control Water Flowing Lamp LED Night Cycle Analog Circuit Electronic Soldering Kits 1.Description:   This kit is a water lamp circuit that is controlled and activated according to the light intensity. When the color of the day is dark or the photosensitive resistor is in a dark environment, the six LED lights on ... $4.19
$5.99 SKU: GY20944-1
$4.19
$5.99
 31

Electronic Dice DIY Kits, Fun LED Lucky Dice Electronic Soldering Teaching Practice Kits Electronic Dice DIY Kits, Fun LED Lucky Dice Electronic Soldering Teaching Practice Kits 1.Description:   When the machine is powered on, the seven LEDs will display a random number of points. The player presses the switch S1, and the seven LEDs will all light up. After a few seconds, the seven LEDs will start to flas... $3.49
$4.99 SKU: GY20941-1
$3.49
$4.99
 31

DIY Light Control Music Heart Shape LED Light Electronic Kits for Beginners DIY Light Control Music Heart Shape LED Light Electronic Kits for Beginners 1.Description:   This product is a new type of light-controlled music lamp kit.  It is a single-junction transistor controllable desk lamp. It is a teaching component and suitable for beginners to learn and practice soldering... $4.19
$5.99 SKU: GY20940-1
$4.19
$5.99
 31

DC 5V Servo Motor Tester Servo 3-gear Indicator Manual Automatic Reset Controller DC 5V Servo Motor Tester Servo 3-gear Indicator Manual Automatic Reset Controller 1.Description:    It is a DC 5V Servo Motor Tester Servo 3-gear Indicator Manual/Automatic/Reset Controller. 2.Feature:   1>.Supports three working modes   2>.Support anti-reverse connection circuit ... $3.49
$4.99 SKU: GY20820-1
$3.49
$4.99
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