DC voltage sensor 0-25v for Arduino

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 ultra compact and very low consumption. It works at 2.4GHz frequencies (free frequency) and is ideal for telemetry projects, robots, peripheral control, video game control applications, remote temperature sensors, pressure, alarms, etc ... NRF24L01 + Wireless Transceiver Module 2.4GHz features:
- Based on chip NRF24L01 + Ultra Low Power
- Free band: 2.4GHz ISM
- Speed: 250kbps, 1Mbps, 2Mbps
- Working current - reception: 13 mA
- Transmission: 11 mA (900nA -deep sleep mode)
- Receiving sensitivity: -94dB 250kbps
- Coverage in closed spaces: 15m / 30m
- SPI interface
- Input voltage: 1.9V- 3.6V
- Input / output port voltage: 0V-3.3V / 5V
- Coverage in open areas: 100m approx.
- Clock frequency: 16MHz

It is a mini GPS module including a NEO-6M chip and an EEPROM memory chip.
The SMA antenna port is On-board IPEX and cell phone button battery ensure robust positioning efficiency and fast satellite discovery speed.
Serial port provides simple initial knowledge to stay in touch with the most compatible Arduino-compatible MCU STM32. Characteristic: - Supply voltage: 3.3 - 5 VDC
- Operating current: 45 mA
- Communication speed: 9600 Bauds configurable from 4800 to 115200 Bauds
- Navigation update: 5 Hz max. (1 Hz default)
- Capture time: at the start 27s, in operation 1s
- Operating temperature: -40 ° C - + 85 ° C
- separate GPS antenna (not included ): 18x18 mm
- Size: 22x30x13 mm

SparkFun XBee Explorer Dongle enables the communication between your computer and any XBee device, as in case of any XBee device, without any cables!

The module is compatible with Series 1, Series 2.5 and standard Pro version with voltage regulator functioning with the current up to 500 mA.

This small GPS breakout is yet another Qwiic module from SparkFun as per usual based on I2C - meaning that you can keep your serial port free for other applications. The board features XA1110 GPS module from GTOP and MediaTek MT3333 chipset already loaded with SparkFun firmware enabling clean and easy use of both ports. 

TUYA IoT interface module - you will be able to control your projects IoT Internet of Things interface of your Arduino. Tuya interface that allows you to control outputs of the Arduino module via WiFi network using apps for Android and iOS mobile devices. The device communicates with Arduino via UART interface, powered by 5V.

It is the freshest serial LCD from SparkFun. Similarly to other SparkFun LCD screens it is put on single board with a microcontroller, however in contrast to the other screens in our offer (SP027 and SP028) it is based on PIC16F88 rather than ATmega328.

Buzzer alarm to convert electrical signals into intermittent acoustic signals in robotic devices and Arduino projects

A buzzer with a pulsating tone generator, after connecting the supply voltage (DC) in the range of 3V -24V, the buzzer generates an intermittent signal with a frequency of approximately 1 Hz. Application example: as a reverse alarm system for a car. 

- Bluetooth 4.0 AT-09 BLE Master / Slave module with 6-pin connection base
- This module is very similar to HM-10 module
- Bluetooth protocol: Bluetooth V4.0 BLE specification
- Ultra-low power consumption, in 90uA standby mode
Wireless Module AT-09 Bluetooth 4.0 CC2541 IOS BLE features:

- Chipset based on CC2541
- Bluetooth Class 2
- Industrial level Bluetooth module SPP
- Flash 256Kb
- Integrated chip antenna
- Power supply: + 3.3 VDC 50 mA
- Working temperature: -5 C to + 60 C
- Operating frequency: 2.4 GHz ISM Band
- Modulation method: GFSK (Gaussian Frequency Shift keying)

This support is a lilypad button to sew clothing or anything else you can dream of.
Lilypad is a wearable E-textile technology developed to have large connection pads to attach to clothing. Lilypad Button Board features:
- Density of the PCB: 0.8 mm
- Size: 8x16 mm
- 1 LED included