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Description
RESOL DeltaSol® SLL Solar 1-2 controllerRESOL DeltaSol SLL Solar 1 2 sensor controller **The RESOL DeltaSol SLL controller is the replacement controller for the Resol DeltaSol BS 4, BS 2, BS Plus, AX and AL controllers.** The DeltaSol SLL is the smallest controller of the SL series. Its equipment is optimised for small and medium sized solar thermal and heating systems, 10 pre configured basic systems are available. The DeltaSol SLL is also the first controller of its category to offer the
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 853 reviews
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Product Reviews
★★★★★ 4
Does not come with a pump.
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
The Good: Changing the fluid in the lower unit is a very easy DIY job. This can save you hundreds of dollars each year by doing it yourself.
The Bad: You need a special pump to change the oil, and sometimes it comes with the gear lube. Unfortunately this product did not come with it. Luckily my neighbor had an extra one from changing the lube a different boat laying around and was able to use that.
The Ugly: If you have to go get the pump, that could cost a few extra dollar but is just an extra nuisance. The pumps are interchangable but you just need to clean it between uses (DON'T MIX DIFFERENT OIL BRANDS)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 28, 2025
★★★★★ 5
Works fine in outdrive
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Good gear oil. Purple dye for leak detection
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
★★★★★ 5
Good Quality
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Always the best quality.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
Looks well made
Looks well made. Rubber seems pliable
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Reviewed in the United States on February 15, 2026
★★★★★ 5
It’s fixed
That awful boat… don’t buy boats unless you like to spend money OBVIOUSLY! This part fixed the boat!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
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