--- product_id: 21799217 title: "Float Switch for Sump Pump - 16-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps" brand: "sump alarm" price: "£38.59" currency: GBP in_stock: true reviews_count: 8 category: "Sump Alarm" url: https://www.desertcart.co.uk/products/21799217-float-switch-for-sump-pump-16-foot-water-level-sensor store_origin: GB region: United Kingdom --- # 13 Amp Power Rating 16-Foot Adjustable Tether IP68 Non-Corrosive Casing Float Switch for Sump Pump - 16-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps **Brand:** sump alarm **Price:** £38.59 **Availability:** ✅ In Stock ## Summary > 💧 Stay Dry, Stay Ahead — The Smart Float Switch That Works as Hard as You Do ## Quick Answers - **What is this?** Float Switch for Sump Pump - 16-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps by sump alarm - **How much does it cost?** £38.59 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/21799217-float-switch-for-sump-pump-16-foot-water-level-sensor) ## Best For - sump alarm enthusiasts ## Why This Product - Trusted sump alarm brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Powerful & Certified:** Handles up to 13 amps (1/2 HP) with CE and IEC approvals, delivering industrial-grade performance. - • **Peace of Mind Warranty:** Backed by a 5-year manufacturer warranty, protecting your investment and preventing costly flood damage. - • **Precision You Can Trust:** Equipped with a Honeywell microswitch for ultra-reliable, repeatable water level detection. - • **Tailored Fit for Any Setup:** 16-foot adjustable tether cable adapts seamlessly to your unique sump or tank configuration. - • **Built to Brave the Elements:** Rugged polypropylene casing with IP68 rating ensures corrosion resistance and temperature durability from 32°F to 140°F. ## Overview The Water Boss Float Switch is a high-precision, durable water level sensor featuring a Honeywell microswitch and a 16-foot adjustable tether. Rated for 13 amps and housed in a non-corrosive, IP68 polypropylene casing, it’s engineered for reliable sump pump and water tank automation. Certified to CE and IEC standards and backed by a 5-year warranty, it’s the professional’s choice for flood prevention and efficient water management. ## Description Sump Alarm Sump Alarm is based out of St. Louis, MO, with US based technical support. Premium products for water to septic. How did we get our start? Sump Alarm began after the founder’s basement flooded on Mother’s Day weekend in 2009. This started a journey into the water/ wastewater industry. What makes our products unique? Sump Alarm manufactures premium float switches, designed to handle the toughest conditions. The Sludgeboss is the only float in its class specifically engineered for septic duty, providing unmatched durability where it's needed most. Why do we love what we do? We love protecting homes and giving homeowners peace of mind with reliable, innovative solutions they can trust. How did we get our start? Sump Alarm began after the founder’s basement flooded on Mother’s Day weekend in 2009. This started a journey into the water/ wastewater industry. What makes our products unique? Sump Alarm manufactures premium float switches, designed to handle the toughest conditions. The Sludgeboss is the only float in its class specifically engineered for septic duty, providing unmatched durability where it's needed most. Why do we love what we do? We love protecting homes and giving homeowners peace of mind with reliable, innovative solutions they can trust. Float Switches for Any Use Review: Works great. - Good value and easy installation. Review: Good solution for a high amperage float switch - I had a simple requirement. To fill a 150 gallon barrel of water when it got low, The pump itself is 110v and a couple of amps required to be switched. I didn't want to create a shock hazard, nor did I want to put any big holes or make some sort of frame to hold a regular float switch. And lastly I didn't want to make this a big project. After doing some research I found nobody makes a float switch that can switch more than a few milliamps without damaging the switch, forcing me to use a relay which means now I need a low voltage power source also for the relay coil. Nor can you avoid having the contacts near the water. Nor will they work without drilling a hole through the side of the tank, or making some frame to hold the apparatus above the water line. This float switch was the perfect answer. it has a very unique design that relies on a big ball bearing rolling back and forth against a fairly hefty microswitch (you can hear it snap on/off inside). The angle of the float is what causes it to roll back and forth. with the adjustable weight attached on the cable as the fulcrum point. I just ran the cable over the top of the barrel slid the weight up/down until I got the desired angle when full/low. And connected the switch to the pump (hot side) and worked like a charm. I was worried about it being a shock hazard. But it looks to be very well thermally sealed shut. (the yellow ridge around it) and it is of a very tough plastic. So I am not worried about it. So the trick is to get the distance from the weight to the float right as that controls the responsiveness of filling/low. And the distance of the weight to the top of the tank to set the height of the filling. Other than that it is trouble free. The switch has both normally closed and open so you can use this to drain or to fill. Took me 5 minutes to install it. But about an hour playing with the adjustment of the weight to get it to fill right up to the top. Since I have to fill and drain to try it out. Be warned this is not a solution if your expecting it keep your tank topped off at all times. The float needs to be some inches above and below the weight before the switch will trigger. ## Features - CONTROL WATER FLOW into and out of tanks and valves with a sump pump float switch by Water Boss. This float level switch helps reduce overflow potential of light to medium amounts of suspended solids. - HONEYWELL MICRO SWITCH ensures a high-precision sump pump switch with accurate repeatability and extended life. This water sensing switch is rated up to 13 amps or 1/2 HP and has CE and IEC approvals. - NON-CORROSIVE CASING of the Water Boss Float for water tanks and bilge pumps is IP68 rated. Rugged polypropylene construction also makes this water level switch temperature-resistant from 32°F to 140°F. - ADJUSTABLE TETHER of its 16-foot PVC jacketed cable makes our automatic bilge switch suitable for an array of applications. Eliminate complex automation with this sump pump replacement float switch. - 5-YEAR WARRANTY against manufacturer defects lets you select the Water Boss Sump Pump Float Switch Replacement with confidence. This reliable float switch yields big savings in flood repair costs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0067E7POC | | Best Sellers Rank | #42,594 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #24 in Water Pump Accessories | | Brand | Sump Alarm | | Brand Name | Sump Alarm | | Color | Yellow | | Customer Reviews | 4.5 out of 5 stars 834 Reviews | | EU Spare Part Availability Duration | 5 Years | | Horsepower | 0.5 Horsepower | | Included Components | Float Switch, Cable Weight, User Manual | | Item Dimensions L x W x H | 6.5"L x 1.5"W x 3.25"H | | Item Weight | 1.5 Pounds | | Manufacturer | Sump Alarm, Inc. | | Manufacturer Part Number | 2359-5 | | Material | Plastic | | Material Type | Plastic | | Power Source | ac/dc | | Product Dimensions | 6.5"L x 1.5"W x 3.25"H | | Product Style | c) 16 Foot Cable | | Specific Uses For Product | Sump Pump; lift station; pump control; septic tank; alarm | | Style | c) 16 Foot Cable | | UPC | 661799381918 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Sump Alarm - **Color:** Yellow - **EU Spare Part Availability Duration:** 5 Years - **Item Weight:** 1.5 Pounds - **Manufacturer:** Sump Alarm, Inc. - **Material:** Plastic - **Power Source:** ac/dc - **Product Dimensions:** 6.5"L x 1.5"W x 3.25"H - **Style:** c) 16 Foot Cable - **UPC:** 661799381918 ## Images ![Float Switch for Sump Pump - 16-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps - Image 1](https://m.media-amazon.com/images/I/811i9ozpJ6L.jpg) ![Float Switch for Sump Pump - 16-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps - Image 2](https://m.media-amazon.com/images/I/71P1GTOrHIS.jpg) ![Float Switch for Sump Pump - 16-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps - Image 3](https://m.media-amazon.com/images/I/71dLevsYHyS.jpg) ![Float Switch for Sump Pump - 16-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps - Image 4](https://m.media-amazon.com/images/I/71r11IhhDCL.jpg) ![Float Switch for Sump Pump - 16-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps - Image 5](https://m.media-amazon.com/images/I/41V6oSjJL9L.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Can this float be used to either fill or empty a tank?** A: Yes. The Waterboss Float Switch supports both filling and emptying. You simply wire it according to your desired function. There’s no need to buy a separate model. **Q: Do I need a counterweight for installation?** A: No, not usually. The float includes an adjustable tether, which is enough for most installs. A counterweight is included for setups where tethering isn’t possible or precise positioning is needed. **Q: What voltages does it support?** A: Water Boss works with both 120V and 220V AC, and also supports 12V or 24V DC circuits — up to 13.3A non-continuous or 12A continuous. **Q: Can I connect this directly to a pump?** A: Yes — the float can directly control pumps up to ½ HP or be used as a low-voltage signal switch in control panels. **Q: How long will it last?** A: Inside every Water Boss is a micro switch rated for over 100,000 cycles, meaning years of dependable operation. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great. *by F***O on April 8, 2026* Good value and easy installation. ### ⭐⭐⭐⭐⭐ Good solution for a high amperage float switch *by I***T on March 5, 2014* I had a simple requirement. To fill a 150 gallon barrel of water when it got low, The pump itself is 110v and a couple of amps required to be switched. I didn't want to create a shock hazard, nor did I want to put any big holes or make some sort of frame to hold a regular float switch. And lastly I didn't want to make this a big project. After doing some research I found nobody makes a float switch that can switch more than a few milliamps without damaging the switch, forcing me to use a relay which means now I need a low voltage power source also for the relay coil. Nor can you avoid having the contacts near the water. Nor will they work without drilling a hole through the side of the tank, or making some frame to hold the apparatus above the water line. This float switch was the perfect answer. it has a very unique design that relies on a big ball bearing rolling back and forth against a fairly hefty microswitch (you can hear it snap on/off inside). The angle of the float is what causes it to roll back and forth. with the adjustable weight attached on the cable as the fulcrum point. I just ran the cable over the top of the barrel slid the weight up/down until I got the desired angle when full/low. And connected the switch to the pump (hot side) and worked like a charm. I was worried about it being a shock hazard. But it looks to be very well thermally sealed shut. (the yellow ridge around it) and it is of a very tough plastic. So I am not worried about it. So the trick is to get the distance from the weight to the float right as that controls the responsiveness of filling/low. And the distance of the weight to the top of the tank to set the height of the filling. Other than that it is trouble free. The switch has both normally closed and open so you can use this to drain or to fill. Took me 5 minutes to install it. But about an hour playing with the adjustment of the weight to get it to fill right up to the top. Since I have to fill and drain to try it out. Be warned this is not a solution if your expecting it keep your tank topped off at all times. The float needs to be some inches above and below the weight before the switch will trigger. ### ⭐⭐⭐⭐ Failed almost exactly 3 years later *by A***F on October 14, 2024* How does the warranty work.. worked well the first 3 years and suddenly just keeps the circuit closed even when floating Update: product warranty is good ## Frequently Bought Together - Float Switch for Sump Pump - 16-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps - SunLee 2 Pole 40 Amp contactor 120v coil UL 2 pole Lighting Load 50 AMP Contactor equivalent to 42CF15AF Condenser Compressor Contactor --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/21799217-float-switch-for-sump-pump-16-foot-water-level-sensor](https://www.desertcart.co.uk/products/21799217-float-switch-for-sump-pump-16-foot-water-level-sensor) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-23*