Omron Gentle Temp 521 Instruction Manual page 7

2. Preparation
2.4
Attaching a Probe Cover
Always use a new and undamaged OMRON MC-EP2 probe cover.
1.
Gently twist off the probe cap.
Note: Do not forcibly remove the probe cap.
2.
Place a new probe cover on the connection ring.
Note: The adhesive side of probe cover should be upward.
3.
Insert the probe into the probe cover on the
connection ring until it clicks.
Note: When the probe cover is not attached correctly, the probe cover
symbol "
6
" will flash on the display and a measurement can't be taken.
Adhesive side
Probe cover
Connection ring