Truma Duomatic L Plus on turva- ja mugavusseade, mis ühe ballooni tühjaks saamisel lülitub automaatselt teisele balloonile, lisaks on süsteemil ka lekkekaitse.
Mõlema ballooni kraanid peavadki lahti olema, aga balloonid ei tühjene korraga, vaid saavad tühjaks järjekorras. Kõigepealt üks, siis lülitab regulaator ennast ümber teisele balloonile ja alles siis tühjeneb teine.
Kusjuures, seade võimaldab vahetada tühja ballooni välja täis ballooni vastu samal ajal kui teist ballooni kasutatakse.
Kuna seadmel on peal ka nn. lekkekaitse ja seda võib põhimõtteliselt kasutada ka ajutiselt ühe ballooni re
žiimis, ja seda ilma, et peaks midagi suurelt ümber ehitama või ühendama.
Roheline indikaator tähendab seda, et just see balloon on hetkel aktiveeritud ning seda ballooni kasutatakse.
Toote kirjeldus internetist:
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Truma Duomatic L Plus
A safe gas supply can be provided even easier and more conveniently using the Duomatic L Plus. The gas pressure regulator kit with automatic changeover and remote indicator for two-cylinder gas systems.
has automatic changeover from empty used cylinder to spare cylinder like the earlier Triomatic predecessor model
the changeover regulator is used to determine which of the two gas cylinders is the used cylinder and which one is the spare cylinder, i.e. the cylinder from which gas is taken first
if the used cylinder is empty the system switches over to the spare cylinder without interrupting the gas supply
simply changing over means that regulators do not need to be swapped
both regulators are connected by a 40 cm long gas hose, meaning that the maximum distance between the two cylinders is 65 cm - can be extended using extension kit
optionally available for 30 mbar or 50 mbar gas systems
provides a constant gas pressure (30 or 50 mbar), regardless of which of the gas cylinders is the used cylinder
pressure gauge fitted as standard
suitable for all commercially available gas cylinders from 3 to 33 kg
both pressure regulators are equipped with a pressure monitor with integrated regulator de-icing system (Eis-Ex)
�Summer mode� or �Winter mode� can be selected on the control panel (both Eis-Ex units used in winter mode)
two indicator lamps on the remote indicator control panel show that gas can be taken from both cylinders - if one of the lamps goes off, the bottle concerned is empty (depends on position of changeover regulator)
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Kasutusjuhend internetist:
www.manualslib.com/manual/1378445/Truma-Duomatic-L-Plus.html?page=2#manual
Loodetavasti peavad ka patareid kauem vastu. Mina olen rahul! 
