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Sonoff S20 Smart WiFi Socket

App Support: Free IOS and for Android mobile App eWeLink.
Remote ON/OFF: Turn electrical devices on/off from anywhere.
Sync Status: Real-time device status provided to App.
Scene: Turn on/off a gang of devices with one tap.
Smart Scene: Triggered on/off by temperature or other environmental conditions.
Timing: Set scheduled/countdown/loop timers to turn on/off at specified time.
Voice Control: Works perfectly with Amazon Alexa, for Google Home, for Google Nest.
Share Control: Control your smart home together with your family.
Load:2200W/10A

STM32 Blue Pill Development Board STM32F103C8T6

Model : STM32F103C8T6
Work Frequency / Clock : 72MHZ
Length x Width : 53 x 22 mm
Connector Type : Female/Jack
Number of Pins : 40
Application : PCB, R & D
Storage resources : 64K Byte Flash, 20KByte
SRAM Interface Resources : 2x SPI, 3x USART, 2x I2C, 1x CAN, 37x I / O ports

TB6600 Stepper Motor Driver Controller 4A 9-42V TTL CNC

easy-to-use professional stepper motor driver
Support 8 kinds of current control
Support 7 kinds of micro steps adjustable
The interface adopts high-speed optocoupler isolation
Automatic semi-flow to reduce heat
Large area heat sink
Anti-high-frequency interference ability
Input anti-reverse protection
Overheat, over current and short circuit protection

TB6612FNG Dual Motor Driver Module 1A

CW/CCW/short break/stop motor control modes
Built-in thermal shutdown circuit and a low voltage detecting circuit
Standby control to save power
CW/CCW/short brake/stop motor control modes
Operating Voltage(VDC): 15
Peak Current (A): 3.2
Continuous Current (A): 1.2
No. of Channels: 1

TCS3200 Color Sensor Module for Color Detection

Chip: TAOS TCS3200 RGB Sensor
Input voltage: DC 3 ~ 5V
Bright white LEDs for uniform illumination
Dimensions: 31.6x24.4mm (L x W)
TCS3200 is a color sensor which has an array of photodiodes
This module does fit on a standard breadboard

TP4056 1S Lithium Battery Charging Module – Micro B USB BMS

Input voltage : 4.5V ~ 5.5V.
Input Interface: Micro USB port.
Charging method: linear charge.
A full charge voltage: 4.2V.
Power: 4.2 w.
Charging accuracy: 1.5%.
Operating Temperature: -10 to +85ºC
Charging indicator: LED indicators for charging and full charging.

Turbidity Sensor for Arduino

Operating Voltage: 5V DC
Operating Current: 40mA (MAX)
Response Time: <500ms
Insulation Resistance: 100M (Min)
Output Method: Analog/Digital
Analog Output: 0-4.5V
Digital Output: High/Low-level signal (you can adjust the threshold value by adjusting the potentiometer)

Tuya 1 Gang Basic Wi-Fi Switch 10A Energy Monitoring Meter

Input: AC 100-240V 50/60Hz
Max Output: 10A
Output: AC 100-240V 50/60Hz
Standby Mode: 0.3W
Operation Temp: -30°C ~ 70°C
Supports Amazon Alexa
Tuya APP remote control
On / Off status
Setup Timer and Delay switch
Share config with other members
Each APP supports 150 smart-home devices
Supports French, Simplified Chinese, Traditional Chinese, English, Spanish, Arabic
Energy Monitoring

Tuya 4 Gang Smart WiFi Touch Switch with App & Voice Controlled

Max. Voltage: AC100V to 240V
Rated Current:10A(Max)
APP: Tuya/Smart Life
Compatible: Alexa/Google Assistant/IFTTT
Working frequency: 2.4GHz

Tuya 8 Gang Smart WiFi Touch Switch with Voice & App Controlled

Power supply:90-250V
Maximum current: 10A / road
Maximum power: 600W / road
Wireless standard: 802.11 b/g/n
Size:147*86mm
Security mechanism: WPA-PSK/WPA2-PSK
Product material: PC V0 fireproof + tempered glass panel
WIFI remote control: turn the light on/off from anywhere
App Support: Free iOS and Android Phone Apps (Smart Life)
Voice Control: with Amazon Alexa, Google Home Voice Control
Independent control: control each way separately
Synchronization status: real-time device status provided on the APP
Timing function: Set the reservation/countdown timer to turn on/off at the specified time

Tuya Mini Smart Switch 16A DIY Switch

Input voltage: 100-240VAC, 50/60Hz
Output voltage: 100-240VAC, 50/60Hz
Power rating: 1 x 16A, max, 3.6kW
Product dimensions：41 x 41 x 20(L x H x W in mm). Fits in the space behind your existing light switch.
Material: PC
Wireless frequency: 802.11 b/g/n 2.4GHz, WPA-PSK/WPA2-PSK

Tuya Smart 2 Gang Wifi Smart Universal Wall Socket

Operating Voltage: 110V-240V
Operating Current: 10A
Frequency: WiFi 2.4G
Compatibility: Alexa, Google homeVoice Controlled, App Controlled
Material: Tempered Glass Panel+PC
Application: Residential / General-Purpose
Fits in 3 by 3 standard box

Tuya Smart 2-gang Double Socket With Usb Charger 13amp

App Control -Control switches from anywhere with your smart phone.(Smart Life TUYA)
Voice Control -Works perfectly with Amazon Alexa, Google Home
Power statistics-You can check the electricity statistics per switch anytime
High quality crystal tempered glass panel design, never fade.
With blue LED indicator, very distinguished.
Wall socket status indication
Witch 2 USB charger.
Touch button to turn on/off the wall socket
Applicable to all the common lamps, such as incandescent,
fluorescent lamps, led lamps ,motor and so on
Suitable for home, office, hotel, hospital and so on.

Tuya Smart WiFi Door Window Sensor

Input voltage:DC3V LR03 1.5V/AAA*2
Quiescent Current:≤10uA
Alarm Current:≤160mA
Low power undervoltage:≤2.7V
WiFi:802.11b/g/n
Magnetic control distance:≥15mm
Working temperature:-10-50℃

Tuya Smart WiFi LED Bulb 12 Watt RGB Dimmable E27

Type: Smart WIFI LED lamp
Base Type: E27
Power: 12W
Material: Aluminum + ABS
Voltage: AC 85- 265V
Emitting color: RGBWW =RGB+Warm White;

Tuya WiFi Smart Socket Plug 16A With Power Metering

Small and Compact design. Ease of Installation with No wiring, Plug, Configure and Play.
Includes an Energy Consumption Meter, measure and monitor consumption in Amperes and watts)
Activation dates, days of the week, start time and duration can all be pre-configured via the Smartlife application giving you complete remote control and ON/Off overwrite.
Supports Voice Commands and also AI units such as Amazon Alexa Echo and Google Home solution.
All your Smart Devices connected via a Single stable Platform been the Smart Life app from Tuya.
Voltage: 110-250V AC
Power Rating : 16A max, 3600W

Type C 5V 1A TP4056 1s Lithium Battery Charger Module BMS

Input voltage : 4.5V ~ 5.5V.
Input Interface: Type C USB port.
Charging method: linear charge.
A full charge voltage: 4.2V.
Power: 4.2 w.
Charging accuracy: 1.5%.
Operating Temperature: -10 to +85ºC
Charging indicator: LED indicators for charging and full charging.

Type-C USB 2S BMS 15W Lithium Battery Charging Module

2 series lithium battery charging plate with equalization function
15W synchronous switch boost boost charging
Charging efficiency 94%
2 series lithium battery charging can be set
2 band series charge balancing
Adjustable charging current

UBLOX NEO-6M GPS module for DIY Project

5Hz position update rate
Configurable from 4800 Baud to 115200 Baud rates (default 9600)
EEPROM to save configuration settings
Rechargeable battery for Backup
Cold start time : 38s
Hot start time : 1s
Indoor GPS : -162 dBm tracking sensitivity
Operating temperature range : 40°C - 85°C
Support SBAS (WAAS, EGNOS, MSAS, GAGAN)
Separated GPS antenna
Supply voltage : 3.3V

ULN2003 Current Relay Driver IC

Contains 7 high-voltage and high current Darlington pairs
Each pair is rated for 50V and 500mA
Input pins can be triggered by +5V
All seven Output pins can be connected to gather to drive loads up to (7×500mA) ~3.5A.
Can be directly controlled by logic devices like Digital Gates, Arduino, PIC etc

ULN2803 Current Relay Driver IC

Maximum voltage allowed between COLLECTOR and EMITTER of each DARLINGTON TRANSISTOR: 50V
Maximum current allowed trough COLLECTOR of each DARLINGTON TRANSISTOR: 500mA
Maximum voltage allowed between BASE and EMITTER of each DARLINGTON TRANSISTOR: 30V
Maximum current allowed trough FLYBACK DIODE of each DARLINGTON TRANSISTOR: 500mA
Typical Rise Time: 130ns
Typical Fall Time: 20us
Operating temperature: -65°C to 150 °C
No additional power needed to be applied for chip for making it work

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Ultrasonic Sensor HC-SR04 Obstacle Detection

Operating voltage: +5V
Theoretical Measuring Distance: 2cm to 450cm
Practical Measuring Distance: 2cm to 80cm
Accuracy: 3mm
Measuring angle covered: <15°
Operating Current: <15mA
Operating Frequency: 40Hz

Ultrasonic Sensor Holder for Ultrasonic Sensor HC-SR04

Acrylic Body.
Easy to install.
Attractive blue color.

Universal 1/ 2 Slots 18650 Battery Charger Intelligent power off

Material: Plastic and Metal
Color: Black
Compact, portable and multi-functional design.
It can charge 2 batteries at a time.
Automatically stops when charging has completed.
With a LED indicator: red light stands for charging status and green light for fully charged.
It’s suitable for some cylindrical lithium batteries such as 18650, 14500, 16340, 10440, and 26650.

USB Host Shield for Arduino

Arduino USB Host Shield allows you to connect a USB device to your Arduino board
The board is based on the MAX3421 chip and works with the SPI pins on the Arduino
Host Shield takes its power from the ‘Vin’ pin on your Arduino
Power from that pin is regulated to both 5V and 3.3V on the shield

USB to RS485 Converter Adapter Module

Fully compliant USB 2.0 Standard, backward compatible with USB1.1
USB to RS485 converter adapter
Support laptop USB port support baud rate range: 75bps - 115200bps, up to 6Mbps For access control systems; cards, various industrial automation; instrumentation
Supports Plug, Play and hot-swap ( USB side)
Parking; bus fare, restaurant; staff attendance, highway toll station; ATM support system: Windows XP, Vista, Windows 7, Linux, MACOS and WinCE 5.0 drive size: 6.1x1.6x1.3cm
Communication distance up to 1.2KM
No external power supply or data cable needed
Small enough to carry with you anywhere

USB to Serial Cable Adapter USB to RS232 9-Pin

Color: Blue
Wire Materials: copper
Type: USB cable
Total Length:80cm
Applicable Equipment: serial line
Support various types of single-chip
Run the driver CH340.EXE file to install
Connect the USB cable to the USB port

USB to TTL Converter FT232RL FTDI Serial Module

FT232RL chip
All signal ports on the FT232RL chip
RXD / TXD transceiver communication indicator
USB power supply, can choose 5V or 3.3V, set by a jumper
Overcurrent protection (500mA self-healing fuse)
Pin definition: DTR, RXD, TX, VCC, CTS, GND
Pitch: 2.54mm
Size: 36 x 18mm
Interface: Mini USB

Vibration sensor module SW-420 for Arduino

Using SW-420 normally closed type vibration sensor
Comparator output, clean signal, good waveform, strong driving ability, >15mA
Operating voltage 3.3V ~ 5V
Output format: digital switching output (0 and 1)
Using a wide voltage LM393 comparator
With bolt holes for easy installation

Waterproof DS18B20 Digital Temperature Sensor Probe Wire Cable

Usable with 3.0V to 5.5V power/data
±0.5°C Accuracy from -10°C to +85°C
Usable temperature range: -55 to 125°C (-67°F to +257°F)
9 to 12 bit selectable resolution
Uses 1-Wire interface- requires only one digital pin for communication
Unique 64 bit ID burned into the chip
Multiple sensors can share one pin
Temperature-limit alarm system
Query time is less than 750ms

Waterproof Ultrasonic Sensor Module JSN SR-04T

Operating voltage: DC 5V
Quiescent current: 5mA
Total current draw: 30mA
Frequency: 40khz
Range: 25cm to 450cm
Beam Angle: less than 50 degrees
Working temperature: -10 ~ 70 Celsius
Storage temperature: -20 ~ 80 Celsius
Small size, easy to use
Low voltage, low power consumption
Strong anti-jamming
Integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions

Weight Sensor 10kg Load Cell with HX711 Amplifier Module

10kg straight bar load cell with HX711 amplifier module
Use to measure weight
Force variation output: Voltage signal
Operating voltage range: 2.6 to 5.5V
Operating temperature range: -20 to + 85 ℃
Power consumption (including power supply circuit): Typical operating current: <1.7mA, shutdown current: <1μA

Weight Sensor 20kg Load Cell with HX711 Amplifier Module

20kg straight bar load cell with HX711 amplifier module
Use to measure weight
Force variation output: Voltage signal
Operating voltage range: 2.6 to 5.5V
Operating temperature range: -20 to + 85 ℃
Power consumption (including power supply circuit): Typical operating current: <1.7mA, shutdown current: <1μA

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Wireless Control 4WD Remote Car DIY Stem Education

DIY Remote Control Car.
All parts available with self Assembling.

Wireless Remote Control Electric Rim Motor lock Battery Operated

Wireless Frequency: 433MHZ
Remote control Distance: 0-50 meters (depending on the environment)
Battery: 4 pieces AA battery
Low Power Reminding: a buzzer alarm per 20 seconds.
Reserve Battery Power: the battery level is too low, unlocked automatically, and no longer locked.
External Power: DC 5V, Micro USB interface
Manual Lock Unlock with Key and Knob

Xl6009 DC-DC Boost Step Up Power Module

Input voltage: 3 - 32V
Output voltage: 5 - 35V (adjustable)
Output current: Maximum output current 3A
Efficiency of this regulator upto <92%
Load regulation: 0.5%
Voltage regulation: 0.5%
Adjustable potentiometer onboard for output voltage adjustment

ZKTECO K40 Pro Biometric Fingerprint Time Attendance System

2.8” TFT Screen Display
Integrated Battery Backup
Economical Time Attendance Solution
Interfaces for 3rd Party Electric Lock & Exit Button
Communication: TCP/IP & USB Host
Multi-Language Supported
3,000 users / 3,000 finger / 3000 card /3,000 pin
2,00,000 memory
Communication : TCP/IP and ADMS ( auto data push)

ZKTeco MB2000 Face Fingerprint Biometric Attendance Device

Face Capacity : 2,000
Fingerprint Capacity :3,000
ID Card Capacity : 3,000
Record Capacity : 100,000
Display : 4.3-inch TFT Screen
Communication : TCP/IP, USB-Host, Wi-Fi (Optional)
Standard Functions :SMS, DTS, Scheduled-bell, Self-Service Query, Automatic Status Switch, T9 Input, Photo ID, Camera, Multi-verification, 12V Output, RS232 Printer (Optional Cable)
Interface for Access Control : 3rd Party Electric Lock, Exit Button, Alarm
Optional Functions : ID / MF Cards, Work Code, ADMS
Power Supply : DC 12V 1.5A
Built-in 2000mAh backup battery to extend operation time

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