❀Designed to transform voltage or change the impedance of a load. | ❀The primary and secondary windings are closely coupled. | ❀Sufficient passband, the original winding inductance is large, the leakage inductance is small, the influence of hysteresis loss can be reduced. | ❀Stable performance, high reliability, convenient to use. | ❀Used as components for circuits such as voltage amplification and power output in radio communication, broadcast television, and automatic control.

Onboard ULN2003A motor driver chip. | Powered by 5-12V power supply. | Onboard XH-5P socket, can be directly connected to 28BYJ-48 stepper motor. | Onboard 4 way signal indicator. | All the pins of the chip are led out to facilitate connection.

Superior performance and durability: The metallized polypropylene film roll structure of the capacitor improves the performance and durability of the product. | High safety: reliable insulation, excellent electrical performance and safe explosion-proof devices. | Application: This operating capacitor is suitable for start-up of single-phase motors with frequencies of 50 Hz and 60 Hz, such as air conditioners, compressors and motors. | Low energy consumption: heat resistance, low leakage, low loss and low impedance. | Strong overload capability: The current has good impact resistance and strong overload capability.

PORTABLE: Compact size makes it convenient to carry and easy to use | COMPATIBILITY: Suitable for lenses and filters with threads ranging from 27mm to 130mm (note: lens not included). | FUNCTION: The camera lens vise tool can be used to repair and restore the edge of the lens, threaded or sunken lens. | DOUBLE-SIDED: Double‑sided available, the front can be adjusted to 130 mm, and the back can be adjusted to 27 mm, suitable for smaller lenses. | PREMIUM QUALITY: The tool is made of black hard anodized aluminum and silver stainless steel, durable with long service life.

Set the Security Level and Baud Rate: The fingerprint reader module can set the security level and baud rate, communication baud rate: (9600xN)bps, N=1~12 (By default, N=6, baud rate = 57600bps). | Function: R307 fingerprint module adopts capacitive surface acquisition chip, integrates fingerprint identification chip, and has functions such as fingerprint input, image processing, feature extraction, template generation, template storage, fingerprint comparison (1:1) and fingerprint search(1:N). | Specifications: Power supply voltage: DC 4.2--6.0V; Working current: 50mA (typical); Peak current: 75mA; Acquisition window area: 14×18 mm; Storage capacity: 1000 pieces. | Applicable Products: Fingerprint identification device can conduct secondary development and can be embedded into various end products such as: access control, attendance, safety deposit box, car door locks. | Good Image Processing Ability: Fingerprint module has good image processing capability, , can successfully capture image up to resolution 500 DPI.High-speed fingerprint recognition algorithm engine, fingerprint image input time is less than

Integrated MAX485 chip, low power transceiver for RS-485 communication module. | Integrated 5.08 mm spacing 2p terminal, convenience of RS-485 communication connection. | It is designed for half-duplex applications. | There are all chip pins, can be controlled and operated by MCU. | Working voltage: 5V. Board size: 44(mm)x14(mm).

Chip:CM108;Input and Output:3.5mm Green Earphone Plug and 3.5mm Microphone Plug | USB Audio Card equips with an USB interface,just plug in and use and small volume makes it easier to carry with,portable and convenient | The output analog signal of it can directly drive the earphone or active speaker and USB Sound Card can also replace traditional audio card directly | Bare plate is easy for you to find out the material is good | No drive program is required.Fit for WIN2000,WINXP,WIN3003