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A Pair of DX-BT27-A Bluetooth Module Long Range Up to 420m BLE 5.1 Wireless Bluetooth TF Transceiver Module for Arduino Compatible with Android/iOS, Including Master and Slave
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A Pair of DX-BT27-A Bluetooth Module Long Range Up Features
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Feature: This is the paired version of the BT27-A master&slave module, which includes one master bluetooth module and one slave bluetooth module. It has been paired and can be directly connected after being powered on. Note: The master module can only be connected with the slave modules sold in our store, and cannot be connected with any other model Bluetooth module
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Multiple Connection Methods: 1.Can search connection Manually; 2.With MAC address code, it can scan QR code for connection. Compatible with Android/iOS(iPhone). Working Voltage:3.3V to 5V. Supported baud rate: 2400,4800,9600,19200,38400,57600,115200
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Long Range: The connection distance between the BT27-A slave and the mobile phone can reach 140 meters, and the connection distance between the BT27-A master and the BT27-A slave can reach 400 meters(This distance data is the result of testing in an unobstructed and open area. If it is not within the visible range during use, please use the measured results as the main one.)
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Notice: Because this module is BLE 5.1 serial port protocol module, so the PC side cannot use the built-in bluetooth or bluetooth adapter for communication.If you need to communicate with slave module by computer, it requires the master module to connect to the computer and use the computer serial port assistant to communicate.For the specific process, please refer to "Use the master Bluetooth to communicate with the module" and "DX-BT24 series Bluetooth module_Main mode_ Application Guidelines".You can find out them on our offcial website
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Technical Support: Out of the box, plug and play. You can find out testing softwares,user's manuals,devlopment documents,and all resources related to this bluetooth module on our offical website. If you encounter any issues, please contact us by Amazon email, and we will resolve your issues within 24 hours
About A Pair Of DX-BT27-A Bluetooth Module Long Range Up
Product Pramas: Module model: DX-BT27 DIALOG 14531 main control chip+PA amplifier Bluetooth specifications: BLE 5.1 Module size: 37.5(L) x 15.7(W) x 4.0(H) mm Operating Voltage: 3.3V/5V Hardware interface: UART Power Supply Stability Requirements： It is necessary to ensure that the input voltage is not lower than 2.8V. The following figure shows the voltage drop of VBAT during radio frequency burst transmission.In order to reduce the voltage drop, it is recommended to reserve 2 (22uF, 0.1uF) chip multilayer ceramic capacitors (MLCC) with the best ESR performance for VBAT, and the capacitors should be placed close to the VBAT pin. Power Down Requirements：Since the working current of the chip of this module is very low, when the power is disconnected, if the IO port of the peripheral MCU has a weak current supplying the module, the module is likely to be in an abnormal working state at this time, so after disconnecting the power of the module, the MCU is connected to the module All IO ports must be configured as pull-down. Hardware Design Layout Recommendations：The DX-BT27 Bluetooth module works in the 2.4G wireless frequency band and uses an on-board antenna. The standing wave ratio (VSWR) and efficiency of the antenna depend on the placement of the patch. Various factors should be avoided as far as possible to the wireless signal transmission and reception.
