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Morningstar Remote Temperature Sensor (RTS) - Connects Battery to Charge Controller to Provide Accurate Battery Temperature Info When Battery & Controller Temperatures are Likely to Differ by >5C

4.7 4.7 out of 5 stars 79 ratings

$33.00
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Color metallic
Brand Morningstar Corporation
Material Metal
Item Weight 0.2 Pounds
Display Type LCD or LED or other appropriate display type

About this item

  • REMOTE TEMPERATURE SENSOR: Morningstar's Remote Temperature Sensor (RTS) provides improved battery charging in solar systems that experience temperature variations during the year. It measures temperature at the battery and the controller uses this data for very accurate temperature compensation.
  • HIGH ACCURACY: This sensor is essential when the battery temperature differs by more than 5°C (9°F) from the controller, ensuring accurate temperature compensation for improved battery charging. Provides precise temperature readings maintaining reliable performance across a wide temperature range.
  • DURABLE & PROTECTION: For defense against harsh environments, the sensor is securely encapsulated in epoxy within a robust power lug housing. This durable construction protects against lightning surges and short circuits for long-lasting performance and reliability in the most challenging conditions.
  • CONTROLLER COMPATIBILITY: The RTS is compatible with various Morningstar models including SunSaver MPPT, TriStar MPPT, SunKeeper, SunSaver Duo, and ProStar. The TriStar has no on-board temperature compensation thus requiring the use of the RTS. Other Morningstar controllers will default to an on-board temperature sensor if a RTS is not connected.
  • TRUSTED RELIABILITY: Morningstar Corporation is a US company established in 1993 and is a global leader in manufacturing PWM and MPPT solar charge controllers, inverters, and accessories. Renowned for the industry's lowest hardware failure rate, Morningstar provides dependable, innovative technology for advanced solar applications. Morningstar products include U.S. based Tech Support and are the top choice for mission-critical users.

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Product Description

Solar charge controllers for monitoring and ensuring steady flow of power to protect batteries
Power inverters for swapping power in solar systems and ensuring proper energy flow
Remote meters for monitoring flow and voltage while managing errors and data
Durable and reliable solar setups for enhanced system accuracy and control without concern
key product features include optimal system tracking, built-in protections, with a high reliability
Customer Reviews
4.2 out of 5 stars
292
4.5 out of 5 stars
173
4.2 out of 5 stars
39
4.7 out of 5 stars
79
4.6 out of 5 stars
9
Price $798.00 $312.99 $33.00 $229.47 $68.00
Voltages Supported 12V, 24V, or 48V (Voc of 150V) 12V or 24V 12V - 150V 6V

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Morningstar Remote Temperature Sensor (RTS) - Connects Battery to Charge Controller to Provide Accurate Battery Temperature Info When Battery & Controller Temperatures are Likely to Differ by >5C


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Customer reviews

4.7 out of 5 stars
79 global ratings

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Customers say

Customers appreciate the controller's functionality, wire length, and battery temperature monitoring. They find it works well, has a long cord, and the remote temperature sensor helps regulate charging temperature. The quality of the product is also mentioned as good.

AI-generated from the text of customer reviews

10 customers mention "Functionality"10 positive0 negative

Customers like the controller's functionality. They say it works well, adjusts charge rate accurately, and has a temperature sensor that is accurate.

"Works great adjusting charge rate and temp sense is dead on accurate." Read more

"NOt much to say. The product is good and shipping is good." Read more

"Seems to work, never done without one so I don't know how much charging improving i have." Read more

"Worked well. They need to offer options without so much cable. I threw 90% of the cable away." Read more

6 customers mention "Wire length"6 positive0 negative

Customers appreciate the controller's wire length. They say it has enough wire, and that the cord is long.

"...Plenty of wire length — I actually cut it in half and used the other half as the voltage sense wire which begs the question, why didn't morningstar..." Read more

"...Plenty of extra wire to run this thing almost anywhere in an RV" Read more

"Not much to say. Has more than enough wire. In fact if you need all the wire included you should move your batteries closer to the controller." Read more

"...really connected this yet, but it looks like it is good, I like the long cord that is on it." Read more

5 customers mention "Battery temperature"5 positive0 negative

Customers appreciate the battery temperature sensor. It helps regulate charging and historical battery temperature to protect them.

"Works great adjusting charge rate and temp sense is dead on accurate." Read more

"It is what it is, a remote temperature sensor. You can attach it to one of the bolts of the battery or tape it to the side, etc...." Read more

"...With the remote battery temperature monitor, the charger knows the correct battery temperature, and charges to the proper voltage, I really do not..." Read more

"...allows the battery charger from morningstar to historically register the temperature in the batteries in order to protect them and the system itself!" Read more

4 customers mention "Quality"4 positive0 negative

Customers like the product's quality. They say it has a nice ring terminal and works well. They also like the long cord.

"Have not really connected this yet, but it looks like it is good, I like the long cord that is on it." Read more

"...Really hard to review something like this as well, it had a nice quality ring terminal as well and it works." Read more

"Good cable..." Read more

"Great product..." Read more

Top reviews from the United States

  • Reviewed in the United States on December 29, 2018
    Works great adjusting charge rate and temp sense is dead on accurate.
  • Reviewed in the United States on September 5, 2021
    NOt much to say. The product is good and shipping is good.
  • Reviewed in the United States on March 27, 2021
    It is what it is, a remote temperature sensor. You can attach it to one of the bolts of the battery or tape it to the side, etc. Plenty of wire length — I actually cut it in half and used the other half as the voltage sense wire which begs the question, why didn't morningstar use 4 wires for this? To combine the voltage and temperature sensors into one shielded cable? That and the price are my only complaints. At the price it should have been 4 wires in one cable to be used as voltage and temperature.

    Nonetheless, you really do need temperature correction.
  • Reviewed in the United States on March 25, 2017
    I haven't installed this particular sensor yet, but I have others. Temperature compensation is the only way to go with solar battery charging if you want the controller to apply the correct voltages. This sensor on a Tristar controller will ensure that your batteries get as fully charged as they can be, and as a result make them last longer, and help you have more power to play with.
    One person found this helpful
    Report
  • Reviewed in the United States on October 18, 2015
    This remote battery sensor is a must have, the charger was using ambient temperature for the battery, the ambient goes up with the heat-sink temperature. When the perceived temperature goes up, the charging voltage goes down, and does not charge correctly. With the remote battery temperature monitor, the charger knows the correct battery temperature, and charges to the proper voltage, I really do not understand why this is not a standard piece of equipment with the charger.
    4 people found this helpful
    Report
  • Reviewed in the United States on January 4, 2013
    Last year, I used a Tristar T-60 to keep the batteries charged during the winter. Using hydrometer readings showed that they were usually always at a medium charge level. With the RTS, this winter, the the readings show a higher state of charge in general.

    Also, the amount of water I have needed to add to the batteries has reduced dramatically. If possible, I will never use a charge controller on Lead Acid batteries without temperature compensation.
    9 people found this helpful
    Report
  • Reviewed in the United States on November 27, 2017
    Seems to work, never done without one so I don't know how much charging improving i have.
  • Reviewed in the United States on September 13, 2022
    Funciona muy bien

Top reviews from other countries

  • Steve
    5.0 out of 5 stars Works as expected
    Reviewed in Canada on December 1, 2020
    This was a replacement for a damaged one and it works as expected.