DC 15V Analog Panel Voltmeter 0 to 15V

Double Side Prototype Board PCB 8x12cm features:
-Thickness of PCB: 1.6mm
-Material: high quality FR-4 glass fiber PCB
-Presented and numbered on both sides
-Top and bottom are identical copper layers
-Pads grid (pitch) 2.54mm/0.1", hole diameter 0.9mm

WIFI transceiver based on the ESP8266 controller.
It has a microcontroller and 2 GPIO pins to be able to operate autonomously without the need for an external microcontroller. Characteristic: - Voltage of power: 3.3V
- Supported protocols: 802.11 b / g / n
- Network support: 2.4 GHz
- Band: 2400 (MHz)
- Wi-Fi Direct (P2p), Soft Access Point
- Integrated TCP / IP stack
- PLL, regulators and integrated power management units
- Output power: 0.15 (W); + 19.5dBm in 802.11b mode
- Consumption in low power mode:

Characteristic:
- Channels: 4 (independent protected by Optocouplers)
- Supply Voltage: 5V
- Output Current: 10A
- Relay activation current: 15mA ~ 20mA
- Isolation: Yes
- Indicator LED: For each channel
- Dimensions: 54x 72mm
- 5V Optocoupled 4-Channel Relay Module
- This module can be directly controlled by the microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL)
Useful links for Arduino / Raspberry programming and projects with Arduino / Raspberry boards:
User manual for the remote control + 4-channel 315 MHz IC2262 receiver:
- Relay Module Programming 5V 10A 4 Channel with remote control + 4 channel receiver

It is a very ideal tool when the third hand is required.
Helping Magnifying Hand Tool features:
- Magnifying glass diameter 60mm
- Weight: 0.5kg
- Dimensions: approx. 15 (26) x 17 x 7cm 

This module adapted for the arduino includes a laser diode and a 3-pin connector for a simple and quick adaptation with the Arduino. The diode is mainly used for laser toys, all kinds of level meter, instruments, stylus pen, mini LCD projector, remote listeners laser, alarm anti-theft light remote control. Light shots and different display can make the color of the image element a little different from the real object. The measurement allowed error is +/- 1-3 cm. Characteristic: - Supply voltage: 5VDC
- Connector of 3 pins:
1- GND
2- VCC
3- Light control of the laser diode
- Point mode: point facula
- Continuous output
- Operating temperature: -36 ° C - + 65 ° C
- Laser wavelength: 650nm (red)

Ideal to connect TTL RS232 devices to your PC through the USB port. RS232 USB to Serial TTL Adapter Module - USB to Serial PL2303HX PL2303 features:
> - Compatible PL2303 controller
- 5 pins: 3.3V, 5.0V, TxR, RxD, GND
- Heat shrinkable insulating cover
- Led data transmission indicators
- 2.5A self-recovery protector fuse
- Supported OS: Win ME, Win2003, Win XP, Vista, Win 7
- Weight: 40 gr. (approx.)

Characteristic: - Supports up to 280ºC
- Electrical and antistatic insulation
- Resistant to acid and alkaline products
- Resistant to solvent
- Adhesive
- Length Approx: 26m
- Polyamide adhesive tape 10mm x 26m
- Known as Kapton polyamide tape
- Product for welding works on those that need to protect some component from the heat

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