---
product_id: 10526564
title: "Letzgo Sump Bobber Water Level Sensor (SB2)"
brand: "letzgo products"
price: "₩3709"
currency: KRW
in_stock: true
reviews_count: 6
url: https://www.desertcart.kr/products/10526564-letzgo-sump-bobber-water-level-sensor-sb2
store_origin: KR
region: South Korea
---

# High current load compatible Submerged operation Adjustable level clamp Letzgo Sump Bobber Water Level Sensor (SB2)

**Brand:** letzgo products
**Price:** ₩3709
**Availability:** ✅ In Stock

## Summary

> 💧 Never get caught off guard—Letzgo SB2 keeps your sump pump in check!

## Quick Answers

- **What is this?** Letzgo Sump Bobber Water Level Sensor (SB2) by letzgo products
- **How much does it cost?** ₩3709 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/10526564-letzgo-sump-bobber-water-level-sensor-sb2)

## Best For

- letzgo products enthusiasts

## Why This Product

- Trusted letzgo products brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless Alarm Integration:** Easily connect to alarms or warning devices for instant alerts.
- • **Universal Fit & Easy Setup:** Stainless steel hose clamp fits all pipe sizes for quick, tool-free installation.
- • **Durable Submerged Performance:** Operates flawlessly even when fully underwater, ensuring nonstop protection.
- • **Reliable Water Level Monitoring:** Stay ahead of flooding risks with precise sump pump water level detection.
- • **Customizable Switch Configuration:** Switch between normally open or closed circuits to fit your system needs.

## Overview

The Letzgo Sump Bobber Water Level Sensor (SB2) is a compact, highly reliable float switch designed to monitor sump pump water levels. Featuring a sealed reed switch that operates fully submerged, it supports both normally open and closed configurations. With a stainless steel hose clamp for easy adjustment and compatibility with alarms and high current devices, it ensures proactive flood prevention and seamless integration into any sump pump system.

## Description

This simple float switch monitors the water level in your sump pump and lets you know if the water level rises or falls. Connect it to a warning device or alarm system for a low cost sump pump alarm. The switch can also be connected to relays and other devices to drive high current loads. Offering high reliability, the bobber's sealed reed switch provides high isolation when pump wiring breaks down. The switch operates even when totally submerged and its stainless steel hose clamp allows easy level adjustment. Its unique reversible float allows for an N.O. or N.C. switch circuit. It fits virtually all sizes and types of return pipes, and comes complete with a stainless steel hose clamp and 20 lead wire.

## Features

- Monitors the water level in a sump pump well
- Connect to a warning device or alarm system
- Operates even when totally submerged
- Hose clamp allows easy level adjustment
- Easily configured as a normally open or normally closed switch

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Sensor Technology | Contact Sensor |
| Manufacturer | Letzgo Products |
| Part Number | SB2 |
| Item Weight | 2.89 ounces |
| Package Dimensions | 4.88 x 3.58 x 1.69 inches |
| Is Discontinued By Manufacturer | No |
| Material | Plastic |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Color:** Black
- **Brand:** Letzgo Products
- **Compatible Devices:** Sump Pump
- **Control Method:** Touch
- **Mounting Type:** Wall Mount

## Images

![Letzgo Sump Bobber Water Level Sensor (SB2) - Image 1](https://m.media-amazon.com/images/I/41Wl-Cf4RZL.jpg)
![Letzgo Sump Bobber Water Level Sensor (SB2) - Image 2](https://m.media-amazon.com/images/I/41Wl-Cf4RZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    This is a great little float
  

*by E***. on Reviewed in the United States on July 15, 2022*

I use these in my fountains to call for water when the water level is low. There is even an option for the circuit to be closed when the float is up or when the float is down.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Reliable Sump Water Level Sensor and Sump Pump Switch
  

*by A***T on Reviewed in the United States on November 24, 2015*

I purchased this switch to replace a defective, unsealed unit in my sump pump sump.  This is a sealed unit (and therefore not subject to rust and  corrosion which killed the original switch).  The switch is wired normally open but can be modified to normally closed by inverting the float.  It is easily mounted to the 1-1/2 inch PVC pipe that is attached to the sump pump.  The price is a bit high, but worth it.  After research and comparison of functionally similar switches, I think this is one of the best available.  My application is in a two-pump sump.  When the lower pump is working properly, there is no need to monitor water levels in the sump.  However when both pumps are operating to keep up with the water flow into the sump, this switch is set to turn on the high water alarm if the top pump is unable to keep up with the water flow.  The function of the switch is to turn on the alarm if the water level starts to rise after the higher pump is operating.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great Water Level Sensor. that is easy to install!
  

*by R***G on Reviewed in the United States on November 2, 2018*

Excellent Water Level Sensor.  Installed it in my sump basin and connected it to an alarm to let me know if the water in the basin is getting too high.  Let's me know if there is a problem before water overflows onto the floor.  Great Sensor, easy to install.

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-01*