The RTS is recommended whenever the temperature of the battery varies more than 5°C (9°F) during the year.
Certifications

ProStar™ whenever the temperature at the battery will be more than 5°C (9°F) different than the temperature at the controller.
TriStar™ for battery charging or diversion control modes (not for load control mode)
Cable length: 10 meters (33 feet)
Accurate to +/–1.5°C (2.7°F)
Extendable cable length
Wide temperature correction range –30°C (-22°F) to +80°C (+176°F)
Wires are non-polarized
ProStar
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TriStar
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MeterHub
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SunSaver MPPT
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SunSaver Duo
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TriStar MPPT
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SunKeeper
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