The display panel includes a touch screen LCD (liquid crystal display), the alarm indicators and an
audio speaker. The display panel can be tilted backward or forward to achieve the best viewing
angle and reduce any glare on the touch screen produced by ambient lighting.
Never use the display panel to position the MR400; severe damage or failure can result. Only use
the guide handle to position the MR400. If breakage of the display panel glass does occur and you
contact the liquid crystal by chance, please wash it from your skin using soap and water.
2‐6 System Overview Expression MR400 Instructions for Use
7 Storage basket provides storage for Quadtrodes, cuffs, SPO2
attachments and other small accessories; see page 2-12 for
8 Module holders provide storage for the wECG and wSpO2
modules; see page 2-12 for details.
9 Wireless processing unit (WPU) houses the communication,
processing and power systems for the MR400.
10 Rear panel houses connections for AC mains power, earth
ground, gating, USB port (service use only), (optional) waste gas
output, and (optional) O2 sensor.
Touch screen provides displayed information and control of
the MR400, and can be used with gloved fingers.
Alarm light provides a visual indication of an alarm condition.
Speaker provides all audible indications.
USB port provides service-related functions.