SUUNTO HELO2 - Manual (Page 49)

At this time, perform your pre-checks, and ensure that:
•
the instrument operates in the correct mode and provides a complete display
(MIXED GAS/GAUGE mode)
• the battery level is ok.
• the altitude and personal adjustment settings are correct.
• the instrument displays correct units of measurement (Metric/Imperial).
• the instrument displays the correct temperature and depth (0.0 m/0 ft).
• the alarm beeps
If the optional wireless pressure transmitter is used ensure that:
•
the pressure transmitter has been properly attached and the cylinder valve is open
• the transmitter and the wrist unit have been properly paired on a suitable code
• the pressure transmitter is working (wireless transmitter indicator blinks, cylinder
pressure is displayed), and that there is no low battery warning displayed
• you have enough gas for your planned dive. You should also check the pressure
reading against your back-up pressure gauge
And, if set to MIXED GAS mode, ensure that:
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