The OMNITRONIC LH-095 Speaker Checker is a speaker testing device for quickly checking loudspeakers and sound systems. It generates an adjustable sinus frequency from 20 Hz to 20 kHz and provides 1 W RMS output at 8 ohms. The unit features a level control, 3-pin XLR line output, speaker output socket and screw terminal. It is battery powered and includes a 9 V 6F22 zinc-carbon battery, spring bow and belt clip.