ITEM NAME:JDY-40 2.4G Wireless Serial Port Transmission Transceiver & Remote Communication Descriptio n Description: 100% brand new and high quality. Fine workmanship and long service life. JDY-40 is developed by 2.4G technology, with a distance of 120 meters. It uses serial communication interface, which is simple and quick to use. You can apply JDY-40 to products only needs to know the knowledge of serial port. Application Scene 2.4G panel switch 2.4G remote controller 2.4G transparent transmission Mobile phone one-to-many control IO switching control 2.4Gtoys Application of intelligent home control Specifications: Color: As Pictures Show Size: As Pictures Show Package Included: 1 *Â JDY-40 2.4G Wireless Serial Port Transmission Transceiver Module Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! JDY-40 2.4G Wireless Serial Port Transmission Transceiver & Remote Communication.1 JDY-40 2.4G Wireless Serial Port Transmission Transceiver Module. It uses serial communication interface, which is simple and quick to use. You can apply JDY-40 to products only needs to know the knowledge of serial port.