The Remote Temperature Sensor (RTS) may be used with Morningstar's ProStar or TriStar solar controller series.

The ProStar has on-board temperature compensation, and the RTS provides more accurate compensation by measuring temperature at the battery. Use of the RTS is recommended whenever the temperature at the battery will be more than 5°C (9°F) different than the temperature at the controller.

The TriStar has no on-board temperature compensation, and the RTS will provide temperature compensated charging. Use of the RTS is recommended only for battery charging or diversion control modes (not for load control mode) and whenever the temperature of the battery varies more than 5°C (9°F) during the year.

If the battery is located more than 10 meters (33 ft) from the controller, the RTS cable length can be extended up to 30 meters (100 ft.).