Built-in CC2541 Bluetooth 4.0 BLE module, supports iOS devices and Android 4.3 devices or later | 1 channel 12V relay. Operating voltage is DC 12V. | Free APP for Android , please search "DSD TECH Bluetooth" in google play. | Free APP for iOS devices(iPhone), please search "DSD TECH Bluetooth" in the APP Store. | DSD TECH provides a one-year warranty on this Bluetooth Relay. If you have any questions, Please feel free to contact us.

Bluetooth module HC-05 Master and slave Two in one module. Please note: iOS devices (iPhone) are not supported | Use the CSR BC417 mainstream bluetooth chip, bluetooth V2.0 SPP protocol standards | Module working voltage 3.6 V to 6V | Default rate of 9600,default pin:1234, the user can be set up.click the button into AT MODE | Can be switched via AT commands as master or slave mode , the device can be connected via AT commands specified

Support 4 kinds of TTL levels:This is a versatile USB to TTL converter. It is powerful enough to handle almost all TTL level communications. It is compatible with 5V, 3.3V, 2.5V, 1.8V TTL levels. | FTDI FT232RL Chip:Built-in original FTDI FT232RL Chip.The DSD TECH brand never uses cheap fake chips. | Not only provides access to UART Transmit (Tx), Receive (Rx), RTS#, CTS#, VCC and GND pins,but also provides access to DSR,R1,DCD,DTR,RESET pins | Protective case: Come with a protective case, this transparent protective case can effectively prevent static interference from the hand and prevent accidental short circuit. | WARRANTY:DSD TECH back this FTDI FT232RL USB to TTL UART adapter with 12 months warranty.If you meet any question, please contact us, we will fix your issue within 24 hours.

USB 2.0 to RS485 Converter and all kinds of 485 interface docking, transmission distance up to 1000 meters. | Mainchip:CP2102(SILICON LABS) ,Industrial chip, high quality, super stable. The Lead PINS include: A +, B-, GND ,GND,5V0 | Industrial Product, With 15KV ESD protection and TVS overvoltage protection | Supports Windows 2000, XP, Vista, Window 7,8,10, Mac OS 9, Mac OS X & Linux. | WARRANTY:DSD TECH back this usb to rs485 adapter with 12 months warranty.If you meet any question, please contact us, we will fix your issue within 24 hours.

Industrial grade USB to RS485 RS422 converter. It easily lets you connect any RS485 or RS422 device directly to your computer's USB port | The main chip is FTDI FT232RL. Built-in 15KV ESD protection and TVS overvoltage protection. Enough for you to deal with different occasions. | LED for RX TX and Power. | Works with Windows 10, 7(32/64bit) Vista 2008, XP, 2003,Mac Etc. | WARRANTY:We back this usb to RS422/RS485 Converter with 12 months warranty.If you meet any question, Please contact us, We will fix your issue within 24 hours.

With this USB to TTL adapter, you can establish communication with your board/MCU through your computer. Maximum transmission speed up to 3Mbps | The main chip is FT232RL from FTDI ,High stability. LED indicator for TX,RX,Power,It is very useful when you are debugging or downloading. | Pin Definition: CTS,RTS,RXD,TXD,GND,VCC;Support VCC output 3.3V and 5V, switch by jumper. | Works with Windows 10, 7(32/64bit) Vista 2008, XP, 2003,Mac Etc. | WARRANTY:We back this FDTD USB to TTL Converter with 12 months warranty.If you meet any question, Please contact us, We will fix your issue within 24 hours.

Built-in CC2541 Bluetooth 4.0 BLE module, supports iOS devices and Android 4.3 devices or later | 2 Channel relay. Supports 5V and 12V operating voltages. | Free APP for Android , please search "DSD TECH Bluetooth" in google play. | Free APP for iOS devices(iPhone), please search "DSD TECH Bluetooth" in the APPStore. | DSD TECH provides a one-year warranty on this Bluetooth Relay. If you have any questions, please feel free to contact us.

0.91 INCH OLED Display: Resolution is 128*32,Very Clear,Black background with blue text display. | IIC(I2C) interface: Only 4 PIN( VCC, GND, SCL, SDA), Simpler than SPI interface Screen, you can leave more ports for connecting other sensors. | Sample Code and Technical Support: You can drive this display through the u8glib library. DSD TECH also provides complete sample code and instruction manuals. you can drive this OLED screen in half an hour, | The main chip is SSD1306; supports DC 3.3V to 5.0V supply. Working Temperature: -30 degrees ~ 70 degrees | About Warranty: DSD TECH offers 1 year warranty and lifetime technical support.If you meet any question, Please contact us, we will fix your issue within 24 hours.

Built-in CC2541 Bluetooth 4.0 BLE module, supports iOS devices and Android 4.3 devices or later | A protective case is included to prevent dust and static electricity. | Free APP for Android , please search "DSD TECH Bluetooth" in google play. | Free APP for iOS devices(iPhone), please search "DSD TECH Bluetooth" in appstore. | DSD TECH provides a one-year warranty on this Bluetooth Relay. If you have any questions, please feel free to contact us.

DSD TECH: DSD TECH focuses on the development of communication connection devices such as USB/Serial/Wireless. We have served more than 100,000 customers in Europe, North America and Japan. | USB to RJ12/RJ11: RJ12 and RJ11 are the same on the physical interface. The difference is that RJ12 uses 6 data lines, while RJ11 uses 4 data lines.This cable leads to 4 signals: GND, Tx, RX, GND. | Silicon Labs CP2102N:CP2102N is an upgraded version of CP2102 chip, with the same high performance and compatibility as FTDI FT232RL. | Replacement for APC Part# 940-0144A. Suitable for the following models: AP77XX AP78XX AP79XX AP86XX AP88XX AP89XX | Warranty:DSD TECH provide a 1 year warranty and lifetime technical support for this USB to RJ12/RJ11 Serial Cable.if you have any questions, please feel free to contact us. We will respond within 24 hours.

DSD TECH: DSD TECH focuses on the development of serial devices such as TTL/RS232/RS485. We have served more than 100,000 customers in total. | Silicon Labs CP2102N:CP2102N is an upgraded version of CP2102 chip, the maximum transmission speed can reach 3Mbps, which is equivalent to FT232RL. | 1.2M/4 Feet:The length of this USB to TTL serial cable is 1.2M/4 Feet. The pin interfaces are: VCC (5V), GND, TX, RX, CTS, RTS. It can meet most of the usage scenarios. | Compatibility: This USB to TTL cable is compatible with Windows 7, 8, 10 and various Linux OS and Mac OS | Warranty:DSD TECH provide a 1 year warranty and lifetime technical support for this USB to TTL Serial Cable.if you have any questions, please feel free to contact us. We will respond within 24 hours.