Aluminum Heatsink with Adhesive LM2596 XL4015

This converter has an internal DC / DC supply and a total isolation between the USB and the RS485 output and allows to establish a reliable and safe communication.
Its FT232RL component has excellent compatibility and a communication rate up to 3M for a maximum distance of 1.2 km. The RS485 output interface uses an optical coupler with high speed for an optical insulation of 1500V and a protection against lightning of 600W: these characteristics allow to protect the computer from the potential damage of static electricity, lightning, over voltages and ground faults. Optical Isolated Converter FT232RL USB 2.0 to RS485 features:
- Required systems: WINDOWS CE / 2000 / XP / VISTA / WIN 7 / LINUX / MAC OS
- Internal DC />

4x M3 x45 Screw Kit 3D Printer Leveling Spring features:
- 4x M3 x45mm steel screw and knurled nut
- 4x Leveling Springs, Hot Bed, 3D printer Extruder
* Outside diameter: 7.5mm
* Inner diameter: 5mm
* Length: 20mm

Spray Contact Cleaner 300ml features:
A preparation for removing oxides and sulfides from electric contacts and for providing protection against corrosion, ensures non-obstructed electricity flow especially in the case of oxidized or worn contacts, can be used in audio products -high and low-frequency, electronic industry and in other places where clean contacts are required. - Restores low resistance in connections
- Has cleaning properties
- Used in audio technologies
- Protection against moisture and corrosion
- Prevents stray current

TP4056 Module Lithium Battery Charger with Protection features:
- TP4056 Li-Ion Micro USB Charger
- Upgraded version of previous TP4056
- Micro USB connection to charge directly from the PC
- Ideal for 18650 batteries
- Based on the TC4056A regulator
- Input Voltage: 4.5V - 5.5V DC
- Full charge voltage: 4.2V +/- 1.5%
- Max Output Current: 1A
- Overvoltage protection 4.2V
- Over discharge protection 2.4V
- LED indicator: charging blue, charging red
- Operating temperature: -10ºC to + 85ºC
- IN + and IN- connection for electronic circuits
- Overcurrent protection: 3A
- Measurements 26 x 19 x 5 mm
- Possibility of current change through Rprog

10x Female-Female Cables 20cm Jumpers Dupont 2,54 features:
-Length: 20cm
-Quantity: 10 cables
-Connectors have female header contacts at either end
-Compatible with male connectors 2,54mm
-High quality and good working conditions
-Easy to install and use

Fan 12V 2x 3D Printer Cables features:
- Voltage: 12V
- Consumption: 65mA
- Speed: 3800rpm -5600rpm - Noise level: 25dB ± 10%
- Screw diameter: 4.5mm
- Service Life Time: 35000 hours
- Operating temperature: -10 ° C to 65 ° C
- Cable length: 11cm
- Dimensions: 40mm x 40mm x 10mm

4x 18650 3.7V Parallel Lithium Battery features:
- Cable 10cm long
- Measures 80x76x 20mm
- Stack length max 67mm

SIM800L GPRS GSM SIM Board Quadband features:
Package includes:
- SIM800L module,
- 2x pin headers,
- Spring antenna,
- 3G PCB antenna - 15cm cable.
- Supported SIM format: Micro SIM.