SD Card Module Reader

NRF24L01 Adapter + Wireless Transceiver 2.4GHz Socket Arduino features:
- The NRF24L01 + module is powered with 3.3V
- This adapter module includes a 3.3V voltage regulator
- You can connect the NRF24L01 module on it at 5V voltage
- Dimensions of PCB: 25x 18mm
- Quantity: Adapter 1 unit

GSM A6 Four Band GPRS Module with MCU Antenna features:
- GSM / GPRS module / development board / shield based on GPRS A6
- Supports GSM / Dual band GPRS, available for remote GPRS and SMS data transmission
- Compact size and low current consumption
- With energy saving technique, current consumption is as low as 5mA (sleep mode)
- Communicates with the microcontroller through the UART port, supports the command including GSM 07.07, GSM 07.05 and Ai-Thinker Enhanced AT Commands
- Working frequency: four-band network, 850 / 900/1800 / 1900MHz
- Operating voltage: 4.8-9VDC (Supply power of the on-board regulator circuit for the A6 module)
- Working current: 2A maximum
- Current Sleep: 5mA

This module is a small source of energy, this board was designed to be as small and as indiscreet as possible.
Putting a battery type AAA and operating the power switch, will have a supply of 5 V to power a lilypad circuit.
Use up to 200ma, it is protected against short circuits. This card has AAA battery clips but can use a 1.2V to 5V input, the module increases the voltage up to 5V.
Lithium polymer batteries are an alternative to rechargeable batteries.
Lilypad is a wearable E-textile technology developed to have large connection pads to attach to clothing. Lilypad Power Supply 5V Step Up with AAA Batteries features:
- Type of batteries connectable: AAA
- Input voltage (of the batteries): from 1.5V to 5V
- Output voltage: 5V

3.5mm Audio Jack Breakout Headphone Video Audio MP3 Jack Module. This female jack connector adapter 3.5mm audio soldered on a PCB board, it is ideal to use in our projects. TRRS connectors are the audio-style connectors seen on some phones, MP3 players and development boards. TRRS stands for "Tip, Ring, Ring, Sleeve", reflecting the fact that unlike a standard stereo connector, this one actually has three conductors and a ground. 

Buzzer alarm to convert electrical to acoustic signals in robotics devices and Arduino projects.
Buzzer 5V Active Buzzer 4 to 7V DC features:

- Input voltage: 4V to 7V
- Diameter: 12mm
- Height: 9.5mm
- Spacing Pins: 7.6mm
- Maximum Current:

NFC Card Type 2 NTAG215 RFID Dual Label 13.56 MHz features:
- Standard: NFC Forum Type2 Tag Ntag215
- Protocol: ISO14443A
- Memory: 540B (504B) EEPROM - Operating frequency: 13.56MHZ
- Reading distance: 0-10CM
- Communication speed: 106Kboud
- Working temperature: -20ºC to 70ºC
- Number of uses 100,000 times
- Data retention: 10 years
- Material: PVC
- Dimensions 86 x 54 x 0.84 mm

The SIM800A modem is based on SIMCOM's dual band GSM / GPRS.