LCD display with backlight, can be used in any illumination conditions. DSP technology is employed to assure accuracy and reliability of FHR detection. High sensitivity probe with 1 MHz in pulse (Option: 2.0MHz in continuous wave). Ergonomic design, portable and convenient. Built_in speaker and Sound frequency output port. Automatically power off; Multi_displaying of FHR: number, battery status indicator, voice intensity indicator; Three working modes:Real_time FHR display, Mean FHR display and Manual counting display.(Option:2.0MHz)
