Product parameters:   Power supply: DC 3-12V.  Board size: 13.5CM* 2.2CM.  Package included: 5 x DIY NE555 Electronic Organ Teaching Kit

Feature: Power supply: 9V-12V (Recommended 9V laminated battery).  Antenna: 50 ohm, unbalanced.  Frequency range: transmitter local oscillator frequency: 7023kHz; receive local oscillator frequency: about 7023-7026KHz Headphones: low-impedance headphones.  Transmit power:...

Description: Working voltage: 3~12V.  For SMD Component Soldering Practice.  Package included: 5 x DIY SMD Component Soldering Practice Board

Description:   Working voltage: 3~12V.  Board size: 90 x 60 x 1.6mm.  This DIY SMD practice board suitable to improve soldering level and speed. Package included: 5 x SMD Components Soldering Skill...

Luxurious HIFI Amplifier Preamplifier Volume Control Tone Board1000UF/25V DIY Suit -2021.    Specifications:  Power Input: AC12 or AC15V, you can also input DC15V (any one of them);  PCB Size: 90*45MM; ...

Description:   Appearance size: 43 x 32mm.  PCB Material: double-sided 1.6mm FR-4 sheet.  Supply voltage: 3-5V.    Package Included: 5 x DIY Sound Light Infrared Sensor Anti-theft Alarm Switch Kit

Specifications: Material: Wood.  Size: approx. 12*7.6*12cm.  Multi-function: No.  Power supply: 2x AA Battery(not included).  Foreign trade: Yes.  DIY: Do it yourself according finished product painting in the package. Applications: Interest-building,...

Feature:    White noise signal commonly known as noise, similar to the noise floor of the radio. Use is very wide, such as testing and treatment of insomnia and so...