EASY TO USE: Headset adapter cable from both USB ports to RJ9 sockets. The RJ9 socket is connected to the earphone and the USB socket is connected to the computer. Comes with a microphone control box: LCD digital cycle timer timer switch to turn off the microphone, adjust the volume and turn off the speaker at the touch of a button. Working Status Indicator: LCD Digital Cycle Timer Programmer timer switch green standby indicator is always on, standby indicator green call flashes and sound is off and flashes red. Unique design: LCD digital cycle timer timer switch. Lightweight, sleek and compact design maximizes convenience and ease of use. Flexible and practical: 158cm short cable, modular clock, LCD digital timer to easily move the adapter, while effectively protecting the computer USB interface.LCD display - Weekly programmable electronic relay time - 16 ON and OFF modes (220V AC).Advanced presets one week ahead.Digital electronic timer at general purpose with daily and weekly programs. Repeat programs with 16 on/off settings. Precise minute setting. LCD screen displays real-time hours/minutes and on/auto/off.DIN rail mounting without DIN rail.Dimensions: 86 x 36 x 65 mm. Contents: 1 timer, 1 English manual