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SIM800L GPRS GSM Module Core Board Quad-band TTL Serial Port
100nF/0.1uF 50V Ceramic Disc Capacitor-Pack of 10
Hi-Link HLK 5M05 5V/1A Switch Power Supply Module
BMP180 Barometric Pressure Sensor Module (Compatible with Arduino)

BMP180 Barometric Pressure Sensor Module (Compatible with Arduino)
RS485 to TTL Converter Module
RFID Reader/Writer RC522 SPI S50 with RFID Card and Tag
4 Channel 5V Relay Module with Optocoupler
5-36V Switch Drive High-Power MOSFET Trigger Module for Advanced Power Control
Input Voltage: 5V to 36V DC
Output Current: 15A continuous, up to 30A with auxiliary cooling
Trigger Voltage: 3.3V to 20V DC
Power Output: Up to 400W
Signal Frequency: 0–20KHz
Dimensions: 34mm x 25mm x 17mm
Weight: 15g
LM2596S DC-DC Buck Converter Power Supply
4 Channel 5V Relay Module with Optocoupler
5-36V Switch Drive High-Power MOSFET Trigger Module for Advanced Power Control
Input Voltage: 5V to 36V DC
Output Current: 15A continuous, up to 30A with auxiliary cooling
Trigger Voltage: 3.3V to 20V DC
Power Output: Up to 400W
Signal Frequency: 0–20KHz
Dimensions: 34mm x 25mm x 17mm
Weight: 15g
ESP32 Development Board with USB Type-C Connector.
LM2596S DC-DC Buck Converter Power Supply
RFID 13.56MHz Card (Pack of 4)
Operating Distance: Up to 100mm (depending on antenna geometry)
Frequency: 13.56MHz
Data Transfer Rate: 106 kbit/s
Data Integrity: 16-bit CRC, parity, bit coding, and bit counting
Protocol: ISO 14443 compliant
Material: Durable PVC construction
Dimensions: Standard credit card size (85.60 × 53.98 mm)
Operating Temperature: -20°C to +60°C
DFPlayer Mini MP3 Player Module MP3-TF-16P
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Audio
DFPlayer Mini MP3 Player Module MP3-TF-16P
- Supported Formats: MP3, WAV, WMA
- Control Interfaces: IO, Serial Port (RX/TX), AD Key
- Storage Media: Supports TF card and U-Disk
- Output Power: 3W (5V Power Supply)
- Voltage: 3.2V – 5V
- Current: Sleep mode < 10mA, Playback 500mA max
- Dimensions: 20mm x 20mm
SKU: DFMP3-016P-0011 -
Relay Modules (1-Channel, 4-Channel, 8-Channel)
4 Channel 5V Relay Module with Optocoupler
- Voltage: 5V DC input
- Current: 15-20mA per channel
- Control Signal: TTL level
- Maximum Load: 10A at 250VAC or 30VDC per relay
- Dimensions: 72mm x 50mm x 18mm
- Material: High-quality PCB and electronic components
SKU: 0008 -
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Communication Modules
RS485 to TTL Converter Module
- Input Voltage: 3.3V to 5V
- Operating Temperature: -40°C to +85°C
- Dimensions: 44mm x 14mm
- Connectivity: Terminal blocks for RS485 output, pin headers for TTL input/output
- Compatibility: Suitable for use with all standard RS485 and TTL devices
- Signal Indicators: LED indicators for power, data transmission, and error detection
SKU: 0005
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5-36V Switch Drive High-Power MOSFET Trigger Module for Advanced Power Control
Input Voltage: 5V to 36V DC
Output Current: 15A continuous, up to 30A with auxiliary cooling
Trigger Voltage: 3.3V to 20V DC
Power Output: Up to 400W
Signal Frequency: 0–20KHz
Dimensions: 34mm x 25mm x 17mm
Weight: 15g