3pcs MD7105-SY 2.4G Wireless Module A7105 Transceiver NRF24L01 Board

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    3. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

    Delivery Time

    Airmail and Airmail Registered Area Estimated Delivery Time
    United States, Canada 7-25 business days
    Australia, New Zealand, Singapore, United Arab Emirates 10-25 business days
    United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland 10-25 business days
    Italy, Brazil, Russia, South Africa 10-45 business days
    Other countries 10-35 business days
    Expedited Shipping 3-10 business days to Worldwide

    Note: If you choose an expedited shipping, please remember to leave a valid contact number, this is required for expedited shipping’s courier delivery.

  •  Returns & Refund

    Last updated October 05, 2022


    If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

    Return Process

    To return an item, please email our customer service at sales@alexnld.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging, and mail your return to the following address:

    Alex NLD
    Attn: Returns
    RMA #
    HaGiborim St 8
    Tiberias, 14388

    Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

    All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.


    After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

    Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.


    If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

    Please provide us with following:

    1. Photos of the front and back sides of the packaging box;
    2. A photo, video or screenshot of the defective item or the defective part of the parcel.

    Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

    Warranty & Repair service

    If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team  and the problem is acknowledged, you can send the items back to us for a repair.

    Note:  Please be aware, we do not cover the cost of the returns fees in  warranty & repair service.

    Order Cancellation

    If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.


    If you have any questions concerning our return policy, please contact us at:

    +972 054-536-2888


The XL7105-D01 is a high-performance 2.4G wireless transceiver module based on Taiwan AMIC's A7105 2.4G wireless transceiver IC. It uses GFSK modulation and works in the international ISM band of 2400-2483M. The high modulation rate of Zui is up to 500KBPS. Based on the SPI interface, the hardware SPI port of the MCU can be used to connect or use the I/O port of the MCU to simulate. The internal FIFO can interface with various high and low speed microprocessors, which is convenient for using low-cost MCU.

• Operating frequency can work at any frequency in the ISM 2.4GHz band, 500KHz stepping
• Onboard PCB antenna
• FSK/GSK modulation
• With 16-bit CRC checksum and FEC error correction.
• Built-in code
• Transceiver separate 64-byte FIFOs
• High sensitivity -98dBm@250kBPs
• Low power sleep current 1uA
• Best transmission distance: open field 250BPS rate, send and receive 10 bytes of data test distance up to about 70 meters

Electrical characteristics:

Item Parameters Min Typ Max Unit Condition
1 Power Supply
1.1 Supply  voltage 1.9   3.6 V  
2 Current Consumption
2.1 sleep mode   1   uA  
2.2 Standby mode   1.8   mA  
2.3 Rx states   16   mA  
2.4 Tx states   19   mA @0dBm
2.5 PLL mode   9   mA  
3 Transmitter Part
3.1 Tx data rate 25 250 500 Kbps  
3.2 Frequency 2400   2483.5 MHz  
3.3 Output power -10 0 1 dBm  
3.4 Spurious emissions
25MHz ~ 1GMz
 47 ~ 74, 87.5 ~ 118, 174 ~230, 470 ~ 862MHz
1800 ~ 1900MHz
At 2nd-RF and 3rd-RF
Otherwise above 1GHz
4 Receiver Part
4.1 Receiver sensitivity   -92   dBm @500Kbps
4.2 Saturation   -23   dBm  
4.3 Adjacent channel rejection   21   dB Desired channel 3dB above the sensitivity limit. 1MHz channel specing
4.4 Alternate channel rejection   30   dB Desired channel 3dB above the sensitivity limit. 1MHz channel specing

Parameters Min Max Unit
Supply Voltage 1.9 3.6 V
Temperature ambient -20 60

1,3,5,6,8,11 NC  
2 GIO1 Multi-function pin 1
4 GIO2 Multi-function pin 2
7,10 GND Power ground
9 VDD Input power (3.0-3.3V)
12 SCS SPI enable
13 SCK SPI clock
14 SDIO SPI data

The VCC pin voltage is between 1.9V and 3.6V. If it exceeds 3.6V, the module will be burned. The recommended voltage is around 3.3V. In addition to the power supply VCC and ground, the other pins can be directly connected to the normal 5V MCU IO port without level shifting. Of course, it is more suitable for the 3V microcontroller.

When connecting with the P0 port of the 51 series MCU, it is necessary to add a 10K pull-up resistor, which is not required to connect with the remaining ports. For other series of single-chip microcomputers, if it is 5V, please refer to the output current of the IO port of this series of microcontrollers. If it exceeds 10mA, it needs to be divided by series resistors, otherwise it will easily burn the module! If it is 3.3V, it can directly connect with the IO port of nRF24l01 module. Wire connection, such as AVR series MCU.
The wireless module is a static-sensitive device. Pay attention to the static electricity protection when using it. Especially in the dry winter, try not to remove the device on the touch module to avoid unnecessary damage.

Package includes:

3 x Wireless module


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