Problems in electronics lead to five hour dive

Diving 90 m level pink and yellow line. (29.05.2020). This time have total of three JJ-CCR divers and one rErvo CCR diver. Montola mine: - https://www.montolankaivossukeltajat.com/ Dive: - dive time team 1: 3 h 40 min - dive time team 2: 5 hours - max depth 91 m - water temperature 4 C Gear: - JJ Rebreather (http://jj-ccr.com/) - NLS scooter and lights (http://www.northernlightscuba.fi/) - GoPro Hero 5 Black with IQSUB 150m Delrin Underwater housing - Ursuit drysuit (https://www.ursuit.com/) - Mares and Apeks regulators Gases: - diluent trimix 10/70 - bailouts: oxygen, nitrox 50, trimix 20/41, trimix 15/48, timix 11/68