Check the listing for details. Mares Sirius LED Tank Module 2.0. Condition: New. Listed at 369.95 USD. The LED Tank Module 2.0 is a tank pressure transmitter that sends data regarding tank pressure directly to compatible Mares dive computers. Once it has been associated with a dive computer, they remain permanently paired. This characteristic makes it easier for future use.The module omits a signal via LED, and depending on the light color shown, it allows you to immediately identify how much gas is in the tank. Divers who dive with decompression gas, can see the quantity of stage gas.Its characteristics make this module a fundamental instrument for photographers and videographers because it allows for easy identification of the remaining gas. Features: • Transmits tank information• Includes a colored LED for quick tank checking on the surface• Permanent pairing• EN250:2014 certified to 300bar• Battery type: 14250• Battery life: 150+ dives• Pairs with the Sirius (414145)