The IR-3 Duo-Air is a downstream safe-second backup regulator that also provides you with easy-to-operate buoyancy control. 
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The RS-110 regulator combines the R-100 first stage and S-10 second stage resulting in a tried and true workhorse regulator. 
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The RS-240 is the standard for quality, performance and affordability. The regulator combines two of the highest quality components on the market: 
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The RS-340 regulator always supplies divers with stable air flow at any tank pressure or depth, delivering maximum breathing ease and comfort for any diver. 
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The RS-350 Imprex regulator is the flagship model of TUSA regulators, possessing a wide variety of functions. 
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The R-400 First stage features a balanced diaphragm system and upgraded HP poppet assembly for enhanced reliability in 2008-09. 
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The RS-520 regulator is the latest TUSA first and second stage that delivers excellent quality in an affordable, lightweight, travel-friendly system. 
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The RS-530 regulator is one of the latest TUSA first and second stages that delivers excellent quality in an affordable, lightweight, travel-friendly system. 
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The RS-670 is TUSA's latest regulator that delivers superior performance and quality in a compact lightweight travel-friendly system 
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The SS-20 safe-second combines the performance of the reliable SS-10 octopus, yet is smaller and allows for both left and right hose configuration. 
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