This is a microprocessor based accented metronome. It has a beats
per
minute range from 40 bpm to 200 bpm. The beats per bar can also be
changed.
It has a speaker
output as well as a line output. The output volume is adjustable. It
also has a build-in test tone generator. Below are some photos of the
unit:


The user's interface consists of a big calibrated rotary knob that
adjusts the beats per minute rate, 4 push button switches, and 3 LEDs.
A green LED indicates that the power is switched on. A yellow LED
indicates
that the metronome is playing. A red LED flashes every time a beat is
generated.
The PLAY/PAUSE button enables/disables the beat generation of the
metronome.
The START button starts the beat generation, but before it starts with
the actual beats, it generates 3 beeps to indicate to everybody that
the
countdown is about to start. By pressing the TONE button, a constant
tone
is generated.
Below is a photo of the top side of the metronome.

The line output is on the left hand side. If a lead is plugged in,
the
speaker
is automatically muted. The power switch is the center. The volume
control
is on the right hand side.