Wireless Bluetooth RF Transceiver Module Serial RS232 TTL 3.3V~3.6V
$17.70
- $9.99 shipping from United States View details
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1、Is a master‑slave integrated Bluetooth serial port module, the master‑slave can be commanded to switch, the instruction is rich and complete. 2、Host: Search for slave devices and cannot be searched by other devices. 3、Slave: The device used to be searched, cannot actively search for other devices. 4、After the master and slave are connected, it is equivalent to a serial cable. At this time, there is no master‑slave, that is, transparent transmission mode. 5、STC microcontroller can wireless upgrade and download programs. 6、Suitable for GPS navigation system, hydropower gas meter reading system, industrial site acquisition control system, can be seamlessly connected with Bluetooth laptop, computer Bluetooth adapter, PDA, etc.
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1、Is a master‑slave integrated Bluetooth serial port module, the master‑slave can be commanded to switch, the instruction is rich and complete. 2、Host: Search for slave devices and cannot be searched by other devices. 3、Slave: The device used to be searched, cannot actively search for other devices. 4、After the master and slave are connected, it is equivalent to a serial cable. At this time, there is no master‑slave, that is, transparent transmission mode. 5、STC microcontroller can wireless upgrade and download programs. 6、Suitable for GPS navigation system, hydropower gas meter reading system, industrial site acquisition control system, can be seamlessly connected with Bluetooth laptop, computer Bluetooth adapter, PDA, etc.
1、Is a master‑slave integrated Bluetooth serial port module, the master‑slave can be commanded to switch, the instruction is rich and complete. 2、Host: Search for slave devices and cannot be searched by other devices. 3、Slave: The device used to be searched, cannot actively search for other devices. 4、After the master and slave are connected, it is equivalent to a serial cable. At this time, there is no master‑slave, that is, transparent transmission mode. 5、STC microcontroller can wireless upgrade and download programs. 6、Suitable for GPS navigation system, hydropower gas meter reading system, industrial site acquisition control system, can be seamlessly connected with Bluetooth laptop, computer Bluetooth adapter, PDA, etc.
More Information
Item Type: Bluetooth RF Transceiver Module
Bluetooth Protocol: V2.0
Default Parameter: Baud Rate: 9600, Pairing Code: 1234, Working Mode: Slave
Working Current: During pairing: 30~40mA; After pairing is completed, no communication: 2~8mA, During communication: 8mA without sleep
Communication Distance: 10m under open conditions, about 8m under normal use environment
| Pin | Name | Description |
|---|---|---|
| 1 | TX | |
| 2 | RX | Module serial port
|
| 12 | VCC | Power Supply 3.3V |
| 13 | GND | Gorund |
| 32 | LED | |
| 34 | KEY |
There are two ways for the module to enter the AT command.
1: Set the KEY pin to high level (or connect to VCC), and then power on the module. At this time, the LED flashes slowly (2S once), the module enters the AT state, and the baud rate is fixed at 38400.
2: When the module is powered on, set the KEY pin to low level (or connect to GND). At this time, the LED flashes quickly (1S twice), and then sets the KEY pin to high level (or connect to VCC). The module will also enter the AT command, but the LED will still flash quickly, and the baud rate will be default 9600.
Bluetooth Module Communicates with Computer
1: First power on the Bluetooth module, check if "OK" is returned after "AT" is sent (Note: That sending AT command needs to add carriage return or line feed)
2: Power on the Bluetooth adapter, search for the nearby Bluetooth module, double-click to find the serial port service, then input pairing code, and finally connect the serial port to find the virtual serial port of the Bluetooth adapter.
3: Finally open two serial port assistants, select the Bluetooth adapter and the serial port corresponding to module, realize serial communication
Bluetooth Module Communicates with Mobile Phone
The mobile phone needs to have a corresponding serial port application software to receive and send.
1: Install the serial port application software on the mobile phone (the protocol inside the for iOS system is authorized, does not support the SPP protocol, so it cannot be paired with the serial port module, some for Android phones may not be compatible)
2: First power on the Bluetooth module, check if "OK" is returned after "AT" is sent (Note: That sending AT command needs to add carriage return or line feed)
3: Open the serial port assistant in the phone, search for the Bluetooth device, and input pairing code to communicate.
Processing Time
- We process and ship orders Monday through Friday, excluding holidays.
- Most orders are processed within 1–3 business days, depending on product availability.
- Processing time does not include delivery time, which varies based on your location and the product’s shipping origin.
Shipping Coverage
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Products may ship from:
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Shipping Methods & Estimated Delivery
| Shipping Method | Estimated Delivery | Cost |
|---|---|---|
| Free Shipping (US) | 5–10 business days | Free, available on eligible items |
| Standard Shipping (US to US by Item) | 5–10 business days | $5.95 for the first item, $3.00 each additional |
| Standard Shipping (From US Warehouse by Weight) | 3–7 business days | Starts at $5.95, increasing by $2 for every additional 4 oz (0.25 lb) up to 1 lb, then by $4 for each additional pound beyond 1 lb. |
| Extended Delivery (Ships from Overseas Warehouse) | 10–20 business days | $14.50 for the first item, $2.00 each additional |
Shipping costs vary by product weight, quantity and origin. Exact rates and delivery estimates are displayed on each product page and confirmed during checkout.
Free Shipping
We offer free standard shipping on select products or during promotional periods. Availability of free shipping will be displayed on the product page and at checkout.
Carriers
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Import Duties & Taxes
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Contact: support@ibspot.com
Item Not Received
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Email: support@ibspot.com
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Order Cancellation Policy
Customers may request to cancel an order before it has been shipped.
Once the package has been shipped, cancellations are no longer possible; however, you may still request a return after receiving your order.
How to Request a Cancellation
You can contact us through:
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- Contact Form: Submit a request through our Contact Us page
Please submit your cancellation request as soon as possible after placing the order to allow us to process it before shipment.
Return Policy
We accept returns for most items within 30 days of delivery for a full refund.
To be eligible for a return:
- The item must be unused, in the same condition as received, and in its original packaging.
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Non-Returnable Items
Certain products cannot be returned, including:
- Perishable goods (for example, food, flowers, newspapers, magazines)
- Intimate or sanitary goods
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Partial Refunds (If Applicable)
Partial refunds may be granted in specific situations, such as:
- Books with obvious signs of use
- Opened CDs, DVDs, software, or vinyl records
- Items not in their original condition, damaged, or missing parts not due to our error
- Items returned more than 30 days after delivery
How to Return an Item
To initiate a return, please contact us at support@ibspot.com with your order number and details about the product you wish to return.
Our team will provide you with return instructions and a prepaid return label.
Shipping Cost for Returns
Please contact us before returning any item.
We will provide a free return shipping label.
If a return is sent back without prior contact or without our provided label, we cannot be held responsible for return shipping costs.
For items valued over $75, we recommend using a trackable shipping service or purchasing shipping insurance.
We cannot guarantee that we will receive your returned item if shipped independently.
Refund Processing
Once your return is received and inspected:
- In-store returns are refunded to the original form of payment or issued as a gift card.
- Mail-in returns using our prepaid label are refunded to the original payment method within 3–5 business days after we receive your return.
Please allow:
- 5–7 business days for the return to reach our Returns Center.
- An additional 3–10 business days for your bank to post the refund to your account.
Damages, Issues & Claims
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Product Claims
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If there is a problem with your order upon arrival, visit our Support Center or contact us directly to arrange return shipping or replacement.
Exchanges
We do not process direct exchanges.
The fastest way to get what you need is to return the original item and place a new order once your return is accepted.
Return Address
IBSPOT Return Center
15 Sawmill Ln
Dover Plains, NY 12522
United States
Customer Support
Our support team is available 24/7 to assist with cancellations, returns, or general inquiries.
Email: support@ibspot.com
Contact Form: Contact Us page
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