True RMS. S7/S9: LCD Display ；S9CL/CLN: EBTN Display. 3.5'' Large screen - Three lines display. 3 Colors/5 Lights intelligently remind dangerous voltage. DC Voltage Test : 600V±(0.8%+3). AC Voltage Test : 600V ±(1.2%+5). Resistance Test : 10MΩ ±(1.2%+3). Frequency Test : 1000Hz ±(1.0%+5). Capacitance Test : 1000uF/0.1uF (3.5%+8) ; 6000uF/1uF (4.5%+10). ADMS9/S9CLN has a very fast test rate. （Complete the test within 1S）. Diode Test : Less than 1.0V diode automatic identification. V-Alert(Non-contact Voltage Detection):Intelligent display of dangerous voltage high, medium and low.(beep alarm sounds) Live wire Check: alarm beep sounds, LCD screen display stripe. Continuity: Intelligently reminds the cable line to connect or disconnect.(If the resistance is less than 30Ω, the beeper sounds) （Complete the test within 0.5S） Power: 2 * 3V (CR2032). Size: 136*67*42mm. Weight: 182g.