2 Double Side Prototype PCB Board 3x7cm

DC Gear Motor 6V 148 Arduino features:
- Voltage: 3 to 6Vdc
- Speed without load: 100 RPM to 6Vdc
- No-load current: 90mA to 3Vdc - 180mA to 6Vdc
- Reduction: 1:48

High sensitivity to Ammonia (NH3), Nitrogen oxides (NOx), Alcohol, Sulphides, Benzene (C6H6), CO2, smoke and other harmful gases.  The MQ-135 sensor is to sensible for other gasses in the air so that is not possible to get good values for CO2 from it.
MQ-135 Air Quality Sensor features:
- Main chip: MQ-135 natural gas sensor and comparator LM393
- Working voltage: 5V
- Current: 150mA
- Digital output: TTL 0/1
- Analog output: analog voltage sensing value
- Quick response features:
- Detection concentration:
   10ppm - 300ppm NH3
   10ppm - 1000ppm Benzene
   10ppm - 300ppm Alcohol
- Adjustable sensitivity with the potentiometer
- Size: 32mm x 20mmx 18mm

6 DIP pins and 2 positions DPDT. This switch is widely used to control the operation of many small electronic power projects, including volume and other controls for audio video, dimmer controls for lights.
It is also a great component for DIY. Vertical Slide Switch 2P2T 50V 0.5A features:
- Type: 2P2T
- Contact resistance: 30 MΩ max.
- Insulation resistance: 100 MΩ
- Maximum operating voltage: 50V
- Maximum operating current: 0.5A
- Can support 500 VAC for 1 minute
- Step between pins: 2.54mm / 0.1 "
- Pin size: 4.5x0.5x15 / 0.77 "x0.19"
- Type of current: DC
- Pins to be welded
- Switch action: 2 ON / OFF positions
- Shape of interrupter: rectangular
- Size: 16x6.5x15 / 0.2 "x0.02"

L7805CV Voltage Regulator 5V 1.5A TO-220 features:
-Type Output: Fixed
-Voltage Output: 5V
-Manufacturer: ST Microelectronics
-Output current: 1.5A
-Max input voltage: 35V
-Input input min.: 5V
-Operational temperature: 0ºC to + 125ºC
-Encapsulated: TO-220
-Polarity: Positive

All ports and slots on the case can perfectly match Raspberry Pi 4 Model B. 

AMS1117 Buck fixed output module 3.3V 800mA features:
- Based on AMS1117-3.3V regulator
- Input Voltage: 4.5 - 12Vdc
- Output Voltage: 3.3 Vdc (+/- 0,05V)
- Max.output current: 800mA
- Operating temperature: -40ºC to + 150ºC
- Dimensions: 25mm x 12mm

Characteristic: -Low voltage electric cables
-Normal: EN 50525-2-31
-Number of conductors: 1x0.35mm2
-Service voltage: 300 / 500V
-Service temperature: at 70ºC
-Resistance at 20ºC: 55.0 Ohm / Km
-Weight (Kg / Km): 7
-Outer diameter: 2.4mm

-Length 1m

10x Tactile Tact Push Button Switch 6x6x8mm features:

- Tactile Push Tact Switch mini electronic Arduino pushbutton
- Measures: 6x6x8mm
- Quantity: 10 units