This module is intended for advanced users who require moderate knowledge of GSM systems and microcontrollers. It needs wiring and firmware updates to unlock the country lock.
Note: Current stock is country unlocked and tested by us.
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SIM900A Mini Module is built with Dual Band GSM/GPRS based SIM900A modem from SIMCOM. It works on frequencies 900/ 1800 MHz. SIM900A can search these two bands automatically. The frequency bands can also be set by AT Commands. The baud rate is configurable from 1200-115200 through AT command. The GSM/GPRS Modem is having internal TCP/IP stack to enable you to connect with internet via GPRS. SIM900A is an ultra compact and reliable wireless module. This is a complete GSM/GPRS module in a SMT type and designed with a very powerful single-chip processor integrating AMR926EJ-S core, allowing you to benefit from small dimensions and cost-effective solutions.
Power supply You cannot power the module from the Arduino, as it is incapable of supplying the necessary peak currents. The Sim900 draws about 2A every so often. It's not necessary to build a 2A supply, as a large storage capacitor on the power supply output will supply the current. I am using a small switch mode buck power supply to step down from an external 12V DC source to 3.3V, with a 0.1F 5V super capacitor on its output and that works a treat. I believe that a 1000uF low esr cap will also work, but I've not tried it. The photo shows the power supply with a 0.1F cap underneath. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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| General Specification | |
| Power Input | 3.4V to 4.5V |
| Operating Frequency | EGSM900 and DCS1800 |
| Transmitting Power Range | 2V for EGSM900 and 1W for DCS1800 |
| Data Transfer Link | Download: 85.6kbps, Upload:42.8kbps |
| SMS | MT, MO, CB, Text and PDU mode. |
| Antenna Support | Available |
| Audio Input/output | Available |
| Serial Port | I2C and UART |
| Serial Debug Port | Available |
| Shipment Weight | 0.038 kg |
| Shipment Dimensions | 5 x 5 x 5 cm |
Please allow 5% measuring deviation due to manual measurement.
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1 x SIM900A kit
1 x Power Cable
1 x Antenna
The latest price of SIM900A Mini Module 5V in Bangladesh is BDT 1,100 You can buy the SIM900A Mini Module 5V at best price from our RoboticsBD or visit RoboticsBD Office.
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Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. |
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Product Images are shown for illustrative purposes only and may differ from the actual product. |
Reference: RBD-0094
Arduino UNO in Bangladesh Micro-controller : ATmega328. Operating Voltage : 5V. Input Voltage (recommended) : 7-12V. Digital I/O Pins : 14 (of which 6 provide PWM output). Analog Input Pins : 6.
Reference: RBD-0443
Based on SIMCom‘s SIM900 Module Quad-Band 850 / 900/ 1800 / 1900 MHz - would work on GSM networks in all countries across the world. Control by AT commands - Standard Commands: GSM 07.07 & 07.05 | Enhanced Commands: SIMCOM AT Commands. Short Message Service - so that you can send small amounts of data over the network (ASCII or raw hexadecimal).
Reference: RBD-0552
Working frequency: quad-band network, 850 / 900 / 1800 / 1900MHz Working voltage: 4.8-9VDC(On-board voltage regulator circuit supply power for A6 module) Working Current: maximum of 2A. RoboticsBD
Reference: RBD-0579
Quad-band 850/900/1800/1900MHz GPRS multi-slot class12 connectivity: max. 85.6kbps(down-load/up-load) GPRS mobile station class B Controlled by AT Command (3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands) Supports charging control for Li-Ion battery Supports Real-Time Clock Integrated GPS/CNSS and supports A-GPS Low power consumption, 10mA in sleep...
Reference: RBD-1037
Quad-band 850/900/1800/1900MHz Inner MT3337 GPS receiver, -165dBm precision, control on a same serial port. Earphone/ microphone outputs on a card or external 32-ohm speaker + supports voice calls with an electret microphone. Sending and receiving SMS.
Reference: RBD-0658
Standard interface layout, compatible with a variety of Arduinos such as the Pro Mini Original FTDI FT232 chip, stable performance USB power has current protection, using 500MA self-restore fuse RXD/TXD transceiver communication indicator With power, sending, receiving indicator, working status LED indicators Mini USB Port Connection Support 3.3V, 5V...
Reference: RBD-1870
Compatible with 3.3V and 5.0V power supply. Compatible with 3.3V and 5.0V signal. Semi-hole pads, onboard module, thin PCB, having a thickness of 0.8mm. Has RXD, TXD signal indicator light, monitor send and receive status.
Reference: RBD-1138
Board Based On AI-Thinker A9 GPRS Module Supports Firmware Upgrade Via Serial Port Operating Voltage: 5v
Reference: RBD-1039
The module was recycled from a mobile phone so you can say it is used. TTL serial port for serial port, you can link directly to the micro-controller. Don’t need MAX232. Power module automatically boots, homing network. Onboard signal lights all the way. It flashes slowly when there is a signal, it flashes quickly when there is no signal. In recent years...
Reference: RBD-0905
Bluetooth protocol: Bluetooth Specification v2.0+EDR. Frequency: 2.4GHz ISM band. Modulation: GFSK(Gaussian Frequency Shift Keying). Emission power: =4dBm, Class 2. Sensitivity: =-84dBm at 0.1% BER. RoboticsBD
Reference: RBD-1928
Frequency: 2.4GHz ISM. Protocol: BLE 4.0. Max transmitting power: max. 4dBm. Modulation System: GFSK. Serial Baud Rate: 1200 to 115200 bps. Reference Distance: 80 meters.
Reference: RBD-1578
Support serial AT command Support re-programmable, OTA firmware update Seamless transparent transmission between serial and WiFi Built-in HTTP Web Server, support configure parameters by web page
Reference: RBD-2064
TTL serial port for serial port, you can link directly to the micro-controller. Don’t need MAX232. Power module automatically boots, homing network. Onboard signal lights all the way. It flashes slowly when there is a signal, it flashes quickly when there is no signal. Note: If you want to buy the cheaper recycled SIM800L Module Click here.
Reference: RBD-1670
The smallest 802.11b/g/n Wi-Fi SoC module Uses low power 32bit CPU and compatible with the application processor Main frequency up to 160MHz Built-in 10Bit high precision ADC Support UART/GPIO/PWM/ADC interface Integrate Wi-Fi MAC/BB/RF/PA/LNA
Reference: RBD-2212
Directly plug antenna interface. I2C bus communication. Multi-capacitor combined filter. Blue LED power indicator. High sensitivity(low noise RF input amplifier). High power auto gains control AGC circuit.
Reference: RBD-201
QUICK OVERVIEW Transmitter: FS-TH9X Upgrade with FS-RM003 2.4GHz Module Receiver: FS-IA10B Default Mode: Mode-2 Input Power: 12V DC (1.5V x 8 AAA Battery) Bidirectional System Frequencies-Hopping Omni-directional High Gain Antenna Low Power Consumption
Reference: RBD-1773
Supply Voltage: 5V USB / 3.7V lithium battery Output Port: 3-wire audio interface/DIY pad Output Type: Analog signal Bluetooth name: VHM-314-V3.0 Bluetooth version: 5.0 Bluetooth passcode: no password Sound source: Bluetooth. USB-PC input(after the back pad is connected, the computer can be connected as a sound card though Micro) Operation method:...
Reference: RBD-2234
¼ wave rubber duck antenna 860-960MHz communication center frequency of 915MHz RP-SMA connector Gain is 2dBi with an overall length of 110mm
Reference: RBD-0797
5Hz position update rate. The cold start time of 38 s and Hot start time of 1 s. Configurable from 4800 Baud to 115200 Baud rates. (default 9600). SuperSense ® Indoor GPS: -162 dBm tracking sensitivity. Support SBAS (WAAS, EGNOS, MSAS, GAGAN). Separated 18 x 18mm GPS antenna. RoboticsBD In recent years 2022, due to a shortage of chips, some of the GPS...
Reference: RBD-0166
Description: This is the very popular 2.4GHz XBee module from Digi. These modules take the 802.15.4 stack (the basis for Zigbee) and wrap it into a simple to use serial command set. These modules allow very reliable and simple communication between microcontrollers, computers, systems, really anything with a serial port! Point to point and multi-point...
Reference: RBD-0345
802.11 b/g/n Standards Wi-Fi Direct (P2P), soft-AP 1MB Flash Memory Integrated low power 32-bit CPU could be used as an application processor A-MPDU & A-MSDU aggregation & 0.4ms guard interval Wake up and transmit packets in < 2ms Standby power consumption of < 1.0mW (DTIM3) RoboticsBD
Reference: RBD-0624
Operating Voltage: DC 2V- 9V Operating frequency: 85MHZ - 115MHZ Output Impedance: 50 ohms
Reference: RBD-1641
Product: GSM Antenna Color: Black SMA male straight 5cm 900-1800MHz radio antenna. Frequency: 900MHz – 1800MHz Maximum Power: 50W Length: 5cm/1.97 inch
Reference: RBD-0560
On-board MAX485 chip, A low power consumption for the RS-485 communication, slew-rate limited transceiver. A low power consumption for the RS-485 communication Onboard then 5.08 (mm) pitch 2P terminal to facilitate RS-485 communication wiring. Slew-rate limited transceiver All pins of the chip have been lead to can be controlled through the...
Reference: RBD-1134
Easy to Assemble Comes With all Components Operating Voltage: 5VDC Operating Current: 200mA Compatible With Arduino and Raspberry Pi
Reference: RBD-1812
11 digital input/output pins Interrupt/PWM/I2C/one-wire 1 analog input(3.2V max input) 16M bytes(128M bit) Flash External antenna connector Built-in ceramic antenna New CP2104 USB-TO-UART IC
Reference: RBD-0397
Support CAN V2.0B technical standard, communication rate 1Mb / S. Module 5V DC power supply, SPI interface protocol control 0 to 8 bytes long data field. 8MHZ crystal oscillator 120Ω terminal resistance Use High-speed CAN transceiver TJA1050 Impedance matching, guaranteed drive capability, long-distance data transmission, prevent signal radiation The...
Reference: RBD-1407
Flash LED off: 180mA @ 5V. Flash LED on to maximum brightness: 310mA @ 5V. Deep-sleep: 6mA @ 5V min. Modem-sleep: 20mA @ 5V min. Light-sleep: 6.7mA @ 5V min.
Reference: RBD-0400
Voltage: 3-3.6V (recommended 3.3V) V. Maximum output power: +20dBm. Power-down mode current: 4.2uA. Operating Range: 1Km Antenna Gain (peak): 2Dbi. 2MB rate (Open area): 520m. 1MB rate (Open area): 750m. 250Kb rate (Open area): 1100m. It uses 2.4GHz global open ISM band, with license free. SPI interface facilitates the communication with MCU I/O port....
Reference: RBD-1962
ESP32-S2-DevKitM-1 Equipped with ESP32-S2-MINI-1 module Easy interfacing Integrates ESP32-S2FH4 chip. PCB antenna 4 MB SPI flash.
Reference: RBD-1959
Single supply voltage 3.4V – 4.5V HW-353A SIM900A Module Development Board GSM GPRS The keypad and SPI display interface will give you the flexibility to develop customized applications. Serial port and Debug port can help you easily develop your applications. One audio channel includes a microphone input and a speaker output. Programmable General Purpose...
Reference: RBD-2136
Very Few External Components Excellent Receiver Sensitivity and Robustness to Interference. Programmable Output Power Up to 4.5 dBm. High-Quality Construction
Reference: RBD-0389
Adopt imported controller PL2303HX, which can stabilize the flash with high speed 500mA self-recovery fuse for protection Two data transmission indicator can monitor data transfer status in real time Reserve 3.3V and 5V pin interface, easy for the DDWRT of different voltage system that needs power The entire board is coated by the high quality transparent...
Reference: RBD-0697
Driver Chip: CH340G Supports all basic windows versions. The adapter plate integrated 1000μF solid capacitors to ensure the current supply The power supply will not be a problem to make WIFI module crashes unresponsive. Using 3225 SMD crystal oscillator, improve the stability of serial work, on a beautiful and tall. Working voltage: 4.5V – 5.5V (Onboard...
Reference: RBD-1852
IPEX To SMA Female External Antenna Adapter SMA Male Antenna for 2.4G WIFI Module Only Antenna and Adapter RF Cable ESP32 Cam is not included
Reference: RBD-0212
Input: 110v or 240v A/C (50/60Hz) Cell Count: 2~3s Battery Type: LiPoly Output Current: 3 x 800mA
Reference: RBD-0941
High-Quality cable One male and one female connector. Flat 25 cm Servo Lead Extension (Futaba) Quality wire and connectors used. Great for larger planes with servos that experience high loads.
Reference: RBD-0656
Single row. 2.54mm pitch. 1 x 40 pins. Through-hole mount.
Reference: RBD-1736
Locking On/Off Switch Green LED Power Indicator Voltage Swapping Switch on both rail Channel Its concave design will not waste your proto zone. Easy to install on a breadboard with Compact portable size
Reference: RBD-0150
Output Power: 5mW Working Voltage: 3-3.3V DC Working temperature: -10 ℃~＋40 ℃ Housing material: Copper Working life: more than 2000 hours Spot mode: Dot Facula (continuous output) Laser wavelength: 650nm red-colored. Operating current: <40mA Power lead length: 120mm. 5V could damage the laser
Reference: RBD-0351
Contactless transmission of data and supply energy (no battery needed) Operating distance: Up to 100mm (depending on antenna geometry) RoboticsBD Operating frequency: 13.56MHz Data transfer: 106 kbit/s Data integrity: 16 Bit CRC, parity, bit coding bit counting Anticollision Typical ticketing transaction: <100 ms ( including backup management)...
Reference: RBD-0665
Operating voltage: 5V Provide both digital and analog output Adjustable sensitivity. RoboticsBD Output LED indicator Compatible with Arduino TTL Compatible Bolt holes for easy installation
Reference: RBD-1935
Water-level sensor indicates the level of water in an overhead tank Gold coated Long life time Simple working procedure
Reference: 0031
3 Types Available (Please select from option) 1. Male to Male 2. Male to Female 3. Female-Female
Reference: RBD-0094
Arduino UNO in Bangladesh Micro-controller : ATmega328. Operating Voltage : 5V. Input Voltage (recommended) : 7-12V. Digital I/O Pins : 14 (of which 6 provide PWM output). Analog Input Pins : 6.
Reference: 0245
Choose your desire Resistor value from below:
Reference: RBD-0797
5Hz position update rate. The cold start time of 38 s and Hot start time of 1 s. Configurable from 4800 Baud to 115200 Baud rates. (default 9600). SuperSense ® Indoor GPS: -162 dBm tracking sensitivity. Support SBAS (WAAS, EGNOS, MSAS, GAGAN). Separated 18 x 18mm GPS antenna. RoboticsBD In recent years 2022, due to a shortage of chips, some of the GPS...
Reference: RBD-0768
Size: 5mm Color: RED Head Shape: Round Lens Appearance: Transparent
Reference: RBD-1354
Length: 8 inches/20 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.
Reference: RBD-0032
Operating Voltage (logic level): 5V With Mini USB 8 analog inputs ports: A0 ~ A7 14 Digital input / output ports: TX, RX, D2 ~ D13 1 pair of TTL level serial transceiver ports RX / TX Using Atmel Atmega328P-AU MCU There is a bootloader installed in it Standard 0.1” spacing DIP (breadboard friendly). Manual reset switch.
Reference: RBD-0166
Description: This is the very popular 2.4GHz XBee module from Digi. These modules take the 802.15.4 stack (the basis for Zigbee) and wrap it into a simple to use serial command set. These modules allow very reliable and simple communication between microcontrollers, computers, systems, really anything with a serial port! Point to point and multi-point...
Reference: RBD-0369
Brand: SparkFun Electronics
Supports binding and multicasting for home automation Mesh-network topology 2.4 GHz for worldwide deployment Common XBee footprint fits Parallax XBee Adapters and the Propeller Activity Board Firmware upgrades via UART, SPI or over the air TRANSCEIVER CHIPSET: SiliconLabs EM357 SoC DATA RATE: 250kbps Max RATED OUTDOOR/RF LINE-OF-SIGHT RANGE: Up to 2 mile...
Reference: RBD-0189
Brand: DFRobot
Xbee Shield for Arduino (without Xbee) INTRODUCTION: The XBee Expansion Board is a compliant solution designed to meet low-cost, low-power wireless sensor networks with special needs.The module is easy to use, low power consumption, and the provision of critical data between devices reliable transmission.
Reference: RBD-0400
Voltage: 3-3.6V (recommended 3.3V) V. Maximum output power: +20dBm. Power-down mode current: 4.2uA. Operating Range: 1Km Antenna Gain (peak): 2Dbi. 2MB rate (Open area): 520m. 1MB rate (Open area): 750m. 250Kb rate (Open area): 1100m. It uses 2.4GHz global open ISM band, with license free. SPI interface facilitates the communication with MCU I/O port....
Reference: RBD-0196
Brand: DFRobot
INTRODUCTION The APC220 radio module provides a simple and economic solution to wireless data communications. Integrates an embedded high speed microprocessor and high performance IC that creates a transparent UART/TTL interface, and elminates any
Reference: RBD-0237
Description: This Telemetry radio set allows you to link to a flight controller such as the APM or Multiwii AIO via a USB equipped device such as a computer, laptop or tablet supporting a USB connection (OTG). APM /Pixhawk Radio Telemetry Kit 433Mhz 100mW (OTG Cable Included)
Reference: RBD-0389
Adopt imported controller PL2303HX, which can stabilize the flash with high speed 500mA self-recovery fuse for protection Two data transmission indicator can monitor data transfer status in real time Reserve 3.3V and 5V pin interface, easy for the DDWRT of different voltage system that needs power The entire board is coated by the high quality transparent...
Reference: RBD-0658
Standard interface layout, compatible with a variety of Arduinos such as the Pro Mini Original FTDI FT232 chip, stable performance USB power has current protection, using 500MA self-restore fuse RXD/TXD transceiver communication indicator With power, sending, receiving indicator, working status LED indicators Mini USB Port Connection Support 3.3V, 5V...
This module is intended for advanced users who require moderate knowledge of GSM systems and microcontrollers. It needs wiring and firmware updates to unlock the country lock.
Note: Current stock is country unlocked and tested by us.
