... test and lab project development. With features of durable structure, large LCD display with backlight and friendly operation interface, the ST815 advanced ... off function 8 Support FC,SC,ST adapter 9 Big LCD, intuitive, easy to use, 10 LED backlight switch on/off ... ×28Battery9V/160mAh NI-MH rechargeable battery or 9V dry battery, LCD display Batteryworking duration (h)4 hoursLow voltage warning≤7.2V ...