Hugyfot developped a pre-dive vacuum check system called 'HugyCheck' which enables the photograper to perform a vacuum test prior to entering the water. This test will indicate whether the housing has been closed properly, and whether the housings' O-rings are in good condition.

The HugyCheck system consists of:

- Electrical vacuum pump.
- One way valve (on one of the bulkheads*).
- LED pressure indicator (on the camera hotshoe).
- Leakage alarm.