How many piezo emitters are located on the lower power module?

The correct answer is that there are two piezo emitters located on the lower power module of the MSA G1 Self-Contained Breathing Apparatus. These piezo emitters are critical for the SCBA's audio alarms and other alert functions. They ensure that the wearer receives clear audible alerts in various scenarios, such as low air pressure or other safety notifications. The placement of two emitters enhances sound projection and improves the chances that the alarm will be heard, especially in noisy environments or when the SCBA user is in a confined space. Understanding the number and function of these emitters helps in recognizing the importance of the design in effective emergency communication.