DC 15V Analog Panel Voltmeter 0 to 15V Round

It allows to save the record of any data.
It has a real time clock RTC, with battery included, so you can keep the date and time over the years and an SD notes reader, which accepts the format FAT16 and FAT32 to record your data. Logging Recorder Data Logger Module Shield UNO Mega SD Card features:
- Arduino data logging shield
- Data recording module to the FAT16 / FAT32 SD card
- Real time with RTC battery.
- SD card interface compatible with the FAT16 / FAT32 format
- Transmitter circuit level 3.3V.
- Compatible with Arduino UNO, Leonardo, ADK / Mega R3 or higher

Transmitter and receiver kit for radio control and data transmission, compatible with Arduino. 433MHz RF Wireless Receiver + Transmitter features:

Specifications of the emitter module: - Power supply: 3V ~ 12V
- Working intensity: max = 40mA (at 12V), min = 9mA (at 3V)
- AM ASK / OOK modulation
- SAW filter
- Working frequency: 315MHz-433.92MHz
- Transmission power: 25mW (315MHz at 12V)
- Range: 20 to 200 meters (different voltages can give different results)
- Transfer speed: 4 kB / S
- Dimensions: 19x 19x 7mm Receiver module specifications: - Power supply: 5.0VDC + 0.5V
- Work intensity: 5.5mA (at 5.0VDC)
- Work frequency: 315MHz-433.92MHz - Receiver sensitivity: -100dBm

Characteristic: - Diameter: 35mm
- Frequency: 2.3 kHz
- Impedance (resonance): 300 Ohm
- Capacity (at 1kHz): 25,000 pF
- Dimensions: 35x0.50mm

The network module communicates with the Arduino type board through the SPI protocol ideal for projects with ARDUINO, PIC, AVR, STM32. ENC28J60 Ethernet LAN Network Module Mini AVR LPC STM3 features:
- Chip ENC28J60 Microchip
- Module: 10Base-T
- 3.3V power
- SPI interface
- 25Mhz speed
- LED status LED
- Hanrun network transformer
- Network Interface board HR911105A
- Operating temperature: -40ºC to + 85ºC
- Dimensions: 51 x 19 x 16 mm

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

IIC/I2C adapter PCF8574 LCD 1602 1604 2004 Interface features:
- Based on the PCF8574A chip
- Power: 5V
- Supports I2C Protocol
- A potentiometer for regulate contrast
- Dimensions: 19x42mm PCF8574 - & gt; the default address 0x20
PCF8574A - & gt; the default address 0x3F - You can change anyone between 0x20 and 0x27 depending on whether or not you have soldered pins A0 A1 A2 - With this module the communication between the Arduino and the LCD It is only made through two outputs, SDA and SCL
- Up to 8 LCD screens can be connected to the same I2C bus choosing a different address - Ideal for projects with ARDUINO and Raspberry Pi platforms - You can use it with PIC, AVR, STM32