We have found that most users enjoy capturing images of things being dropped and preferably broken, the standard microphone will work for most items but sometimes you may need that extra amplification to guarantee a trigger.
The hi-sensitivity microphone has an internal amplifier giving approximately 80 times more gain, it plugs into the Mic input of the VersaTrigger and requires no batteries as it is powered from the VersaTrigger control unit.
Typical uses for the hi-sensitivity microphone are:
Detecting a small object falling onto a surface without having the microphone in-shot
Detecting water droplets falling on water (water drop photography - not water drop collision)
Detecting the sound of a projectile flying through the air