Arduino Serial Port Bluetooth Module（Master）
Serial Port Bluetooth Module (Master)
serial port bluetooth, Drop-in replacement for wired serial
connections, transparent usage. You can use it simply for a serial port
replacement to establish connection between MCU and GPS, PC to your
embedded project and etc.
Default serail port setting : 115200(optional 4800,9600,19200), N, 8, 1
Pairing code : 1234
Running in slave role: Pair with BT dongle and master module.
Bluetooth protocal : 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
Speed : Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps
Security : Authentication and encryption
Profiles : Bluetooth serial port
CSR chip : Bluetooth v2.0
Wave band : 2.4GHz—2.8GHz, ISM Band
Protocol : Bluetooth V2.0
Power Class : (+6dbm)
Reception sensitivity: -85dBm
Voltage : 3.3 (2.7V—4.2V)
Current : Paring - 35mA, Connected - 8mA
Temperature : -40℃~ +105℃
User defined Baud rate : 4800, 9600, 19200, 38400, 57600, 115200, 230400,
Dimension : 26.9mm*13mm*2.2mm
Coupled Mode: Two modules will establish communication automatically when powered.
PC hosted mode: Pair the module with bluetooth dongle directly as virtual serial.
Power supply : +3.3VDC 50mA
Working temperature : 0 ~ +55 Centigrade
Dimension : 26.9mm x 13mm x 2.2 mm
Computer and peripheral devices
Pin definition :
* PIO8 connects with LED cathodea with 470ohm series resistor in
between. LED NEGATIVE connects to ground. It is used to indicate the
module state. After powered on, flashing intervals differ in different
* PIO9 is used to control LED indicating paring. It will be steady on when paring is successful.
* PIO11, module state switching pin. HIGH -> response to AT command; LOW or floating -> regular work status.
* With build-in reset circuit, reset is completed automatically after powered on.
* Steps to set to MASTER:
* Set PIO11 HIGH with a 10K resistor in between.
* Power on, module comes into AT Command Response Status
* Open HyperTerminal or other serial tool, set the baud rate 38400,
8 data bits, 1 stop bit, no parity bit, no Flow Control
* Via serial port, send characters "AT + ROLE = 1 r n",if successful, return "OK r n", where r n is carriage return.
* Set PIO11 LOW, re-power, then in Master state, automatically search for slave module and connect.
Download the datasheet
Download the manual
Shipping & Handling Policy
· Generally, It always take 7-14 business days to ship to USA, United Kingdom, Australia ,Canada ,
France and 7-25 business days to most other countries.
· And we always will ship our customers' parcel in two business days
(because our shipping agent have weekend from Saturday to Sunday ) after
we receive payment.
International Buyers Note :
· Import duties, taxes and charges are not included in the item price or
shipping charges. These charges are the buyer's responsibility.
We always mark our customers' parcels as a gift, so our customer always
don't need to pay the tax, but if your country have very strick policy
on tax and meanwhile you don't want to pay the tax, please tell us
what's the value should we indicate on the parcel and we will mark the
value as you required.
· We ship to worldwide, so if your country or place is very far away,
please allow your parcel more time to arrive and we supply three kinds
of shipping way :
1、Standard Int'l Flat Rate Shipping (this way is default shipping way for free shipping mode)：this
standard post has the tracking number, but you can only track the
shipping more information of the goods on our ebay official shipping
agent tracking website : espeedpost ,
but anyhow it is a reliable shipping way because it use the same
shipping carrier as Expedited Int'l Flat Rate Shipping. All of the free
shipping products use this shipping way.
2、Expedited Int'l Flat Rate Shipping Way：this
shipping way has the tracking number and the tracking number help you
to hold all of the status of your parcel situation, which means you will
know the exact status of your parcel anytime and anywhere. So if you
want to track your parcel parcel anytime and anywhere, please choose
this shipping way.
You can track your parcel on three tracking website with the tracking number we update on ebay: 1、 Espeedpost ; 2、Hongkong Post ; 3、Your Country Post Website.
3、Express Delivery Shipping Way：This
shipping way contain DHL、UPS、Fedex , if you need our products urgently ,
please use this shipping way and you can contact us and ask us the to
fix the shipping price and then we will use express delivery way for you
specially as soon as possible.
· We will make shipment within 48 hours once the payment is clear
(Saturday and Sunday are not included) All items will be dispatched from
our depot and shipped by HongKong Post Air-mail.
· We will make shipment according to the address you put on eBay, if you
want us to ship items to a different address from your ebay please tell
us before or after you pay.
· We supply combined shipping and you will get more discount on shipping
cost if you use the combined shipping when you buy kinds of items.
· We can only accept Paypal by now and thanks for your understanding.
Returns and Refund Policy
· We always take customer service seriously and want you to be 100%
happy with your shopping experience here. If you have any queries or
question please contact our team by email first before leaving any
negative feedbacks we will email back to you within 48 hours and we
promise here that we will give all of our customers best products、best
service and best solution of problems !
· If you are unsatisfied with our item or service, then please follow
the good eBay practice to contact us before leaving any feedback and
return it within 7 days for a replacement or money back.
· Please contact us before you return it.
· We are committed to resolve all issues in a friendly and satisfactory
manner and give all of our customers best products、best service and best
solution of problems and want you to be 100% happy with your shopping