Aluminum case for Raspberry Pi 4 model B

It has an automatic voltage regulator, which for practical purposes results in quieter operation and less vibrations.
Characteristic:
- Minimum operating voltage: 8 V
- Maximum operating voltage: 45 V
- Maximum current: ± 2.5 A (24V, adequately ventilated or refrigerated)
- Logic voltage: 3 V / 5.5V
- Microstep resolution: full, 1/2, 1/4, 1/8 , 1/16, 1/32
- Factory soldered temples
- 4-layer PCB, 2 oz. Copper for improved heat dissipation
- Short-circuit and overtemperature protection - Use potentiometer to adjust the current
- Measurements: 20x16x12 mm

The DC-DC 25A solid state relay has a 3-32VDC input and a 6-60VDC output. It has a maximum load capacity of 25A.
It has a long operating life and high reliability, a compact size. This relay switches very quickly. Fotek SSR-25 DD 25A DC-DC Solid State Relay 5V-60VDC output 

Ideal to stimulate users' creativity and inspiration and the realization of their ideal. Widely applied to many fields, 3D toy printing, teaching equipment and other technological devices. 3D Creality Ender-3 PRO DIY 3D Printer Kit features:

- Modeling technology: FDM (Fused Deposition Modelingï¼ ‰
- Printing size: 220 x 220 x 250 mm
- Machine size: 440 x 410 x 465 mm
- Max traveling speed: 180mm / s
- Filament: 1.75 mm PLA, TPU, ABS
- Input: AC 100 - 265V, 50 - 60Hz
- Output: DC 24V, 15 A, 360W
- Layer thickness: 0.1 - 0.4 mm
- Nozzle diameter: 0.4 mm
- Precision: ± 0.1 mm
- File Format: STL, OBJ, G-Code
- Working mode: online or SD offline
- Max nozzle temperature: 255 Deg.C

Use the right tool for every need.
It is a special electrostatic brush for cleaning electronic components or places where the electrostatic charge must be taken into account. Electrostatic Brush ZD-155C 150 mm features:
- Model: ZD-155C
- Brush length: 150 mm
- Hair length: 16 mm
- Number of hair groups: 3

Third hand stand for easy soldering of wires with a diameter from 1 to 5mm. Number of holes 5.

The pliers enable precise cutting and stripping of single and multi-core cables with diameters between 0.8 and 2.6 mm / 110-20 AWG.

Led infrared sensor.
Detector of the source of fire or flame, can detect a flame or wavelength 760 nm-1100 nm
Particularly sensitive to the flame spectrum.
This optical flame sensor is a device that detects the existence of combustion by the light emitted by it.
Infrared LED Flame Sensor 5mm features:
- Range of light, Distance of 80 cm.
- Angle detection of about 60 degrees,
- This light can be detected by an optical sensor,
- Can be captured by digital inputs and analog inputs of Arduino.

SONOFF SNZB-01 is a stylish mini wireless switch by ZigBee, via its Bridge (required). It has three control options: single press, double press and long press, so you can program routines and actions quite easily in the simplest way you need.