Product Specifications
HJ-840
                        Telephone, Computer, Workstation, Server, Mobile phone, Laptop
                        Wireless
                        Bluetooth
                        Short Message
                        CE, RoHS, BQB FCC
                        New
                        NRF52840
                        Internal Antenna
                        BLE 5.2
                        Uart Firmware and Self-Developed Blank Firmware
                        HJSIP
                        Tape
                        6.2mm*7mm*0.9mm
                        Tangshan City, Hebei Province
                        8542390000
                        

