ITEM NAME:BLE4.2 Bluetooth Wireless Module Digital Transmission Mode External Anten EEL Descriptio n Descriptions ï ¼Å¡ 100% brand new and high quality BLE4.2 Bluetooth Wireless Module High Speed Digital Transmission Mode Featuresï ¼Å¡ Material: PCB Color: blue Size: 18 * 14.94 * 2.6 MM Weight: 8G. Model no. : jdy-17. Frequency: 2.4g. Transmitting power: 0DB. Communication interface: UART and ITC. Operating voltage: 1.8v - 3.3v. Operating temperature: -80 to -40 degrees. Storage temperature: -80 to -40 degrees, antenna: external antenna. Transmission sensitivity: -97dbm. Transmission distance: 60 m. Module size: 18*14.94*2.6MM. Package included: JDY-17 bluetooth 4.2 module Note: Please allow a little size error due to manual measurement.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! BLE 4.2 Bluetooth Wireless Module High Speed Digital Transmission Mode.BLE4.2 Bluetooth Wireless Module High Speed Digital Transmission Mode. Weight: 8G. Frequency: 2.4g. Transmitting power: 0DB. Communication interface: UART and ITC. Storage temperature: -80 to -40 degrees, antenna: external antenna.