Communication Modules (WiFi, Bluetooth, GSM)

• Based on the SX1278 IC from SEMTECH
• Utilizes LoRa spread spectrum technology for enhanced range
• Functions as both a transmitter and receiver
• Ideal for long-distance wireless communication

• Quad-band: 850/900/1800/1900MHz for global GSM network compatibility
• Connects to any global GSM network using a 2G SIM
• Voice calls: Make and receive calls using a headset or external speaker and microphone
• SMS: Send and receive SMS messages

• Quad-band compatibility: Works on GSM networks worldwide (850 / 900 / 1800 / 1900 MHz).
• Allows communication via SMS, MMS, GPRS, and audio through UART with AT commands.
• Includes 12 GPIOs, 2 PWMs, and an ADC from the SIM900 module.
• Compatible with Arduino and Arduino clones.

• Built-in Antenna – Comes with an integrated antenna for GPS signal reception.
• Baud Rate – Default baud rate of 9600bps, without battery installed.
• Wide Power Supply Range – Operates between 3-5V, making it suitable for various setups.
• EEPROM Storage – Stores all settings and data, even when power is off.

• Operating Voltage: 3.3V (DC)
• Communication Protocol: UART
• Serial Communication Baud Rate: 9600
• Speed Limit: 500m/s

• Compact Design: Small 4.8cm x 1.8cm PCB for easy integration.
• Reliable Chipset: Uses ENC28J60/SS for stable performance.
• High-Speed Communication: Features a 25MHz crystal oscillator.
• SPI Interface: Ensures efficient data transfer with 3.3V power input.

HC-05 Bluetooth Module ( Refurbished)

Discover the 5V MP3 WMA Decoder Board Audio Module, designed for seamless audio playback from USB and TF card sources in Bangladesh. This module supports MP3 and WMA formats, features an FM tuner, and operates at 5V, making it ideal for various audio projects.

Discover the 5V Video WMA Decoder Board Audio Module, designed for seamless video and audio playback from USB and TF card sources in Bangladesh. This module supports WMA audio formats and video playback, along with FM radio functionality, making it ideal for various multimedia projects.

• Low Power Consumption: Consumes only 50 mA of current
• Wide Frequency Band: Operates at 2.4 GHz for reliable communication
• Adjustable Communication Speed: Supports speeds from 9600 to 115200 bps
• Operational Range: Can work within an 8–10 meter range

• Chipset: TI CC2530 chipset for reliable wireless communication.
• Voltage Range: DC 2.1V ~ 3.6V (recommended 3.3V for optimal performance).
• Transmission Distance: Up to 800 meters (with 3dBi antenna in open space).
• Antenna Interface: SMA interface for connecting antennas.