Feature:1. Reliable Recording: Designed by embedded system with high speed MCU to make it run stably and record clear sound from phone line unlike other phone recorders that need PC support.2. RJ11 Port: A small black box with two RJ11 ports for phone line input and output, plug in the 5V USB power adapter and the system turns on and starts working.3. Plug And Play: Simply connect the phone cord to the input or line out port, connect the device to the 5V USB power adapter, and automatically recording each call without pressing any keys or buttons.4. Small Size: This telephone recorder is portable, so you can carry it around with you when you need it and easily store it when you don't need it, without taking up too much space.5. Red Light Blinks During Recording: During the recording process, the telephone recorder's red light blinks once per second to let you know the recorder is running.Specification:Item Type: Telephone RecorderModel: TELREC05Memory: Built in 32G storageLoop Recording: Support loop recordingData Reading: Recording files can be read directly through the U disk functionSupport Phone Type: All analog phones are supportedAudio Format: WAVOperating Temperature: 0 - 40.Package List:1 x Host Computer1 x Data Cable1 x Plug1 x Telephone Line1 x Instruction ManualNote:Please pay attention to the correct operation