TM1637 4-Digit Digital Display Module

Transceiver 1km SI4432 433MHz Wireless Transmitter Telemetry features:
- Transceiver based on the SI4432 Silicon Labs chip
- Ultrathin ultra small (16.5 × 17 mm)
- Good harmonics: easy for FCC / CE certification
- Penetration capacity (measured through 8 floors)
- Frequency range: 433.92MHz
- Sensitivity down to -121 dBm
- Maximum output power: 20dBm
- Data transfer rate: 0.123-256 kbps
- FSK, GFSK and OOK modulation
- Power supply: 1.8-3.6 V
- Ultra low power shutdown mode
- Digital indication of received signal strength (RSSI)
- Time to wake up
- Bidirectional antenna switch control and automatic adjustment
- Configurable packet structure
- Preamble detection

USB DC 5V Bluetooth Audio features:
- You can connect it with your smartphone
- Power: DC 5V micro USB
- Speaker: 4 ~ 8 Ohm - Audio Jack: 3.5mm
- SD card: support MP3 / WMA / WAV / FLAC format
- The transmission distance could be up to 10m
- Size: 50 x 40 mm

Allows control: - Up to 2 bidirectional current motors
- Or 1 stepper motor Shield is compatible with NodeMcu ESP8266 CP2102 WIFI Development Board ESP8266 WiFi Motor Drive L293D Expansion Shield Board ESP12E NodeMcu features:
- Minimum operating voltage: 4.5 V
- Maximum operating voltage: 36 V
- Maximum current: ± 1.2 A
- Logic voltage: - 2.3V <= HIV <= VIN (high)
                        - 0.3V <= VIL <= 1.5V (low)
- Controller L293D
- Measures: 58x42 mm ESP12 port control kit: - D1, D3 - motorA
- D2, D4 - motorB

The adaptor for the well-known ESP-12 and ESP-12E module

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.

HD V2 Raspberry Pi camera board The Raspberry Pi High Definition (HD) camera board connects to any Raspberry Pi or Compute Module to create HD photos and video.
Uses Sony's IMX219PQ image sensor that offers high-speed, high-speed video images Sensitivity.
Raspberry Pi Camera Module offers reduced image contamination such as fixed pattern noise and smudges. It also has automatic control functions such as exposure control, white balance and luminance detection.
Raspberry Pi Camera Board, Sony IMX219 8 Megapixel Sensor features:
High-quality images
High data capacity
Fixed 8 megapixel focus (includes focus adjustment tool)
Compatible with 1080p, 720p60 and VGA90
Sony IMX219PQ CMOS image sensor
15-pin ribbon cable

433.92 MHz radio receiver module that allows you to also control it via a radio remote control. You can control each channel either by remote control, the free APP "eWeLink" or with wizards such as Alexa or Google Home. This will allow you to create scenes, schedules, and much more. Its relay supports up to 4 devices simultaneously. Each device can be powered by 5-24 V DC.

This fingeprint scanner from ADH-Tech combines a highly precise fingerprint sensor module with an onboard MCU and UART interface enabling trivially very connection to any project.

The scanner independently reads and analyses the fingerprint thanks to an MCU algorithm that can send a converted digital signal to a peripheral serial interface for a data read. The onboard MCU algorithm enables operations such as for example a fingerprint enroll.