3pcs JDY-22 4.2 Ultra Low Power BLE bluetooth Module Serial Transmissions External Antenna
- Stock: In Stock
- Model: EB0042968
- SKU: EB0042968
| Sleep pattern | Instructions | Functional description |
| Start wake-up | AT+STARTEN1 | Mode 1: wake up call, users need sleep can be controlled by AT+SLEEP command, wake up can be awakened by PWRC pin low level. |
| Start sleep | AT+STARTENO | Mode 0: the power is very low under this mode. The connection calls the permeable transmission current at 900uA, disconnects the connection current below 200uA (can set the broadcast interval current to 30uA), this mode PWRC pin wake up, such as the serial port in 10 seconds without data or will not be connected to sleep automatically again into sleep |
Common problem description:
| Problem | Answer to the question |
| 1: how MCU disconnects the bluetooth connection in the connection state | In the connection state, the PWRC pin is pulled down, and the serial port sends AT+DISC to disconnect. |
| 2: how much is the current when the module wakes up | All mode work current is not more than 1mA |
| 3: How much data can be written to serial port once | No byte limit at 9600 baud rate |
| 4: After the serial port is configured, do you need to restart it to take effect? | It is recommended to restart the module when the parameters are set |
| 5: How to test the depth of sleep current in the test module | It is recommended to test the current of VCC and GND pins |
Default parameter configuration used in factory:
| Sequence | Function | Factory default parameters | Instructions |
| 1 | Serial port baud rate | 9600 | AT+BAUD4 |
| 2 | Sleep pattern | Start wake-up | AT+STARTEN0 |
| 3 | Broadcast name | JDY-21 | AT+NAMHJDY-21 |
| 4 | Broadcast interval | 200MS | AT+ADVIN1 |
Package included:
3 x JDY-22 4.2 Ultra Low Power BLE bluetooth Module Serial Transmissions External Antenna
Shipping Time
After you successfully placed an order at RenhotecIC.com, you will receive a confirmation email with your invoice. Once your order is shipped, you will be emailed with the tracking information of your package. Also, you can choose your preferred shipping method during the checkout process. Kindly advise: please select DHL/FedEx if you need our product urgently.
The timeline of the whole shipping process is shown below:
The total delivery time is calculated from the time your order is successfully placed to the time received. Total delivery time is broken down into processing time and shipping time.
Processing time: The time it takes to prepare your item(s), includes preparing your items, performing quality inspections, and packaging for shipment. Normally, the processing time is 1-3 days (Only include Monday to Saturday ) after getting your order.
Shipping time: The time for your item(s) to travel from our warehouse to your destination. The shipping time depends on the shipping method you chose. Please refer to the shipping rate section for details.
Shipping Rates
You could choose the shipping method based on your preference during checkout, different shipping methods will apply different rates and shipping times. Please check the following chart for detail:
You could choose the shipping method based on your preference during checkout, different shipping methods will apply different rates and shipping times. Please check the following chart for detail:
| Shipping Method | Shipping Rates | Shipping Times |
| Flat Shipping (Promotion) | $10 | About 5-30 Working Days to Worldwide (Only include Monday to Saturday ) |
Standard Express（0.5KG starting price listed） | Based On Weights | About 5-15 Working Days to Worldwide (Only include Monday to Saturday ) |
Priority Express （0.5KG starting price listed） | Based On Weights | About 3-7 Working Days to Worldwide (Only include Monday to Saturday ) |
In addition, the transit time depends on where you're located, the shipping method you choose, and where your package comes from. We will keep you informed of any problems here to help you get your order as soon as possible.
If you want to know more information, please contact the customer service by contact form or sales@renhotecic.com. We will settle your problem as soon as possible. Enjoy shopping!
