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This 2.8 inch TFT LCD Resistive Touch Screen Shield is compatible with Arduino UNO, Leonardo, UNO PLUS, NUCLEO, XNUCLEO and has a 320x240 resolution, 65K colors, SPI interface and an onboard touch controller. It also has an adjustable backlight to save power and a Micro SD slot for easy storage.

This 4 inch TFT LCD Touch Shield has a resistive touch screen and an onboard stand-alone touch controller. It's compatible with Arduino development boards and has SPI control, a micro SD slot, PWM backlight control and 65K colors. Comes with STM32 and Arduino examples.

This ADF4351 output frequency range is 35M-4400M (4.4G), providing 2200M-4400M sine wave and 35M-2200M square wave signals through SMA female interface. It is controlled via three-wire SPI, and with step of 1K and 0.1K. It is powered by 3.3V, with a 500mA current requirement. Typical power supply is 5V.

This 3.5inch TFT touch shield has a resistive touchscreen, compatible with Arduino UNO, Leonardo, NUCLEO, XNUCLEO and more, with SPI control and PWM backlight control. It has a 480x320 resolution, 65K colors, and an XPT2046 touch controller. Includes STM32 and Arduino examples.

This potentiometer has a switch to adjust volume and a copper DC connector to withstand high current. It features a Bluetooth 5.0 version with a transmission distance of up to 15m, and is compatible with 30-200W speakers with 4 and 8 ohms. Protection mechanisms include self-recovery overheat and short circuit protection. Output power is dependent on the input voltage: 12V--12/20W, 15V--18/30W, 19V--32/45W, 24V--38/50W.

This potentiometer with switch allows easy control of volume and is good for DIY speakers. It comes with a copper DC connector and 470uf35V solid capacitors for power storage and heat dissipation. It also features Bluetooth 5.0 for efficient transmission up to 15m, ABS plastic material, and protection mechanisms. Compatible with 30-200W speakers (4-8 ohms) and 5-24V power supply.

This portable instrument features multi-mode conversion with easy implementation, high precision and low current consumption. It has a power supply voltage of 2-5.5v and a working temperature of -40 to 125 degrees celsius. It is programmable with a data rate transmission via I2C compatible serial interface and has an automatic shutdown with onboard reference and oscillator. It is 16 x 28mm and weighs 2.5g.

High voltage generator with input voltage DC 3V-7.2V, input current 2A-5A, output voltage about 200,000V, two pole discharge distance 10mm-20mm. Size D24*64mm. Please pay attention to safety when using.

This USB to RS232 converter cable allows easy connection between USB and serial port devices, with a maximum transfer rate of 1 Mbps. It is ideal for connecting to cellular phones, digital cameras, modems, and ISDN terminal adapters.

This T-type connector is made of ABS and is 15cm long. It works with official Arduino boards and is made of hard plastic.

This 4-channel wireless remote control duplicator can clone up to 2 remote signals from 2 different remotes, and is compatible with 99.99% of common fixed and learning code remotes. It operates with 6V DC Battery CR2016, and has a transmit distance of 50-100m. Programming is easy - just press and hold a button on the original remote and one of the buttons on the clone remote until the LED on the clone remote flashes steadily.

This DC motor speed controller is able to control the speed of a DC motor with reverse polarity protection and high current protection. It has an output current of 6A-10A and a speed range of 0%-100%. It uses a potentiometer and screw terminals for easy and quick wiring.