--- product_id: 9775043 title: "ReefKeeper Module RKM-SL2" brand: "digital aquatics" price: "β‚±409" currency: PHP in_stock: false reviews_count: 3 url: https://www.desertcart.ph/products/9775043-reefkeeper-module-rkm-sl2 store_origin: PH region: Philippines --- # LED Status Indicator for instant system feedback Isolated pH & Salinity Ports for precise, interference-free readings Dual Temperature Ports for redundant monitoring ReefKeeper Module RKM-SL2 **Brand:** digital aquatics **Price:** β‚±409 **Availability:** ❌ Out of Stock ## Summary > 🌊 Stay ahead of the reef game with pinpoint precision and smart automation! ## Quick Answers - **What is this?** ReefKeeper Module RKM-SL2 by digital aquatics - **How much does it cost?** β‚±409 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/9775043-reefkeeper-module-rkm-sl2) ## Best For - digital aquatics enthusiasts ## Why This Product - Trusted digital aquatics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Future-Proof Firmware:** Upgradeable firmware with free updates keeps your system cutting-edge and adaptable to new features. - β€’ **Versatile Switch Ports:** Two switch inputs support Auto Top Off (ATO) systems or leak detectors, automating your aquarium’s safety. - β€’ **Dual Temperature Inputs:** Add a second temperature probe for fail-safe, redundant temperature tracking across multiple tanks. - β€’ **Cost-Effective Salinity Probe:** Digital Aquatics’ salinity probe delivers true readings with built-in temperature compensation at 30% less cost than competitors. - β€’ **Precision Monitoring, Zero Interference:** Isolated pH and salinity ports eliminate ground loops, ensuring ultra-accurate water chemistry data. ## Overview The ReefKeeper Module RKM-SL2 is a compact, advanced aquarium monitoring module featuring isolated pH and salinity ports with built-in temperature compensation, dual temperature probe inputs for redundancy, and two switch ports for automation. Designed for seamless integration with ReefKeeper Elite or Lite systems, it offers cost-effective, precise water parameter tracking and future-proof firmware updates, making it an essential upgrade for professional reef keepers seeking reliable, interference-free monitoring. ## Description The RKM-SL2 is the newest System Lab module from Digital Aquatics. It's a big leap forward with fully (and individually,) isolated ph and salinity ports. On top of that, the Digital Aquatics salinity probe is equipped with full digital temperature compensation built in! This make it easy to calibrate and ideal for testing a variety of tanks. Whether you're mixing for a water change, monitoring your main system, checking up on a quarantine or frag tank the SL2 with conductivity probe will report a true and accurate value!The SL2 also allows for another temperature probe to be added to the system for redundant monitoring as well as two more switch inputs; great for ATO systems or leak detectors. The DA salinity probe is nearly 30% more cost effective than competitive options and when cared for and kept clean our probe will last for many years. Great quality and value is part of our commitment!Multiple InputsThe RKM-SL2 has a variety of input ports providing a broad range of monitoring options. It's a powerful addition to either a ReefKeeper Elite or the ReefKeeper Lite system!1 x pH portThe pH port on the SL2 is an isolated pH port. This all but eliminates the affect ground loops and system interference when using multiple pH probes. Any standard pH probe with a BNC interface should work with the SL2.1 x Salinity portThe salinity port uses the DA Salinity probe on this completely isolated port. The SL2 salinity port reports back salinity in PPT.1 x Temperature Probe portDigital Aquatics Temperature Probe2 x Switch portsThe switch ports can be use with float switches or other contact devices to run Auto Top Off (ATO) systems, or trigger other custom events.UpgradeabilityThe SL2 also has upgradeable firmware so you can take advantage of our developing feature set; and firmware updates are always free!Product Specs LED Status Indicator Temperature Port pH Port Two Switch Ports Salinity Port Two Bus Ports Physical Dimensions: 1.0" x 2.25" x 4.30"Package Co ## Features - LED Status Indicator - Temperature Port - pH Port - Two Switch Ports - Salinity Port ## Images ![ReefKeeper Module RKM-SL2 - Image 1](https://m.media-amazon.com/images/I/51Fdy0+ITNL.jpg) ## Customer Reviews ### ⭐ defected by design, Digital aquatic admitted this publicly *by D***M on Reviewed in the United States on February 26, 2012* the unit is defected by design, Digital aquatic admitted this publiclyI got this unit in Aug-2011, and it was not working properly. DA asked me to send the unit back to them as there is a design problem in the SL2(their words). I sent the unit and till now I did not get a unit back. Every month digital aquatic say next month we will fix the problem. Terrible customer service and bad quality ### ⭐⭐ Disappointed *by R***P on Reviewed in the United States on March 3, 2015* As usual, DA product normally involve a call to the support people and this is just another example. ### ⭐ Products ok, customer service terrible F- *by M***T on Reviewed in the United States on June 25, 2013* I have a reef keeper elite system, it works ok, the problem is with my net module. I have called several times, no person just voice mail, they say to submit question via tech support online then hang up. I have sent several emails over a period of several days, you get a case number. They tell you how important you problems is to them. As of today no response. RUN THE WAY, if I knew what I know now I would have gone with Apex. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ph/products/9775043-reefkeeper-module-rkm-sl2](https://www.desertcart.ph/products/9775043-reefkeeper-module-rkm-sl2) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-04-23*