DS3231 Mini RTC is a Mini Real-Time Clock module designs for Raspberry Pi, but it also can be used to Arduino. DS3231 RTC IC Self-adjust 3.3V and 5V.Provide battery backup for continuous timing, Low-power consumption. Complete clock functions include seconds, minutes, hours, day, date, month and year timing, and provide valid to 2100.

It has Two calendar alarms, 1Hz, and 32.768kHz output. Reset output and input buttons Debounced High-speed (400KHz) I2C serial bus.

This is a must-have accessory to experience the high performance of the Raspberry Pi 4 Models. The Aluminium Alloy Case with Double Dual Cooling Fan Heat Sink Metal Case is designed especially for Raspberry Pi 4 Model B.

This is a premium quality heat sink for industrial and continuous use applications for the Raspberry Pi 4. This heat sink enables the Raspberry Pi to function with very high reliability and at higher efficiencies for applications which require the maximum computing power of the Pi 4.

HDMI To Micro HDMI Cable 1.5 Meter Round, High-Quality Copper-Clad Steel Black is compatible with all previous HDMI standards.

You can connect your phone/tablet/digital camera with a TV set to achieve synchronous display on the big screen to have more exciting experiences. By this, you can enjoy a carefree feeling of human-computer interaction.

It supports 1440P wherein you can watch HDTV, play games, transmit files by connecting your cellphone to TV, have an interactive big screen and enjoy a wonderful life.

This DC 12V KK-P30/25 15KG Lifting Solenoid Electromagnet consists of an iron core and a coil to attract magnetic substances, using the magnetic action induced by electric current, only while the current is applied. This compact functional device offers high power with high reliability. The structure and design to release the residual magnetism left after de-energization is also one of its unique features.

This is a breakout board/Prototype Board for PCF8591 IC. The PCF8591 is a single-chip, single‑supply low‑power 8‑bit CMOS data acquisition device with four analog inputs, one analog output, and a serial I²C‑bus interface. Three address pins A0, A1, and A2 are used for programming the hardware address, allowing the use of up to eight devices connected to the I²C‑bus without additional hardware. Address, control, and data to and from the device are transferred serially via the two-line bidirectional I²C‑bus.