---
product_id: 741961176
title: "YoLink LoRa Smart Water Level Monitor Sensor, Wireless Battery Operated Float Switch Alarm, Drain Pump Alarm, AC Concentrated Water Overflow Tank Level, Toilet Leak Sensor, 105dB Sire, YoLink Hub Required"
brand: "yolink"
price: "€ 128.02"
currency: EUR
in_stock: true
reviews_count: 5
category: "Yo Link"
url: https://www.desertcart.hr/products/741961176-yolink-lora-smart-water-level-monitor-sensor-wireless-battery-operated
store_origin: HR
region: Croatia
---

# LoRa wireless up to 1/4 mile Battery powered, no wiring needed 105dB loud built-in alarm YoLink LoRa Smart Water Level Monitor Sensor, Wireless Battery Operated Float Switch Alarm, Drain Pump Alarm, AC Concentrated Water Overflow Tank Level, Toilet Leak Sensor, 105dB Sire, YoLink Hub Required

**Brand:** yolink
**Price:** € 128.02
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of leaks with smart, wireless water level monitoring!

## Quick Answers

- **What is this?** YoLink LoRa Smart Water Level Monitor Sensor, Wireless Battery Operated Float Switch Alarm, Drain Pump Alarm, AC Concentrated Water Overflow Tank Level, Toilet Leak Sensor, 105dB Sire, YoLink Hub Required by yolink
- **How much does it cost?** € 128.02 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/741961176-yolink-lora-smart-water-level-monitor-sensor-wireless-battery-operated)

## Best For

- yolink enthusiasts

## Why This Product

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

## Key Features

- • **Multi-Use Smart Alerts:** Get instant push, SMS, email, or siren notifications to prevent costly water damage anywhere, anytime.
- • **Robust & Stable Design:** Stainless steel washers protect against waves and sidewall impacts for consistent, accurate water level detection.
- • **Ultra-Long Range Wireless:** LoRa tech delivers reliable signals up to 1,320 feet outdoors—perfect for hard-to-reach spots without WiFi.
- • **Effortless DIY Installation:** Pendant float switch mounts easily with included tie wraps—no electrician or cables required.
- • **Seamless Smart Home Integration:** Works with Alexa, IFTTT, and Home Assistant to automate your water safety ecosystem.

## Overview

The YoLink LoRa Smart Water Level Monitor Sensor is a wireless, battery-operated float switch alarm designed for versatile water level detection in sump pumps, AC condensers, toilets, tanks, and more. Featuring ultra-long-range LoRa connectivity (up to 1,320 feet), a powerful 105dB built-in siren, and easy DIY installation, it integrates seamlessly with smart home platforms and sends real-time alerts via app, SMS, or email to prevent water damage. Requires the YoLink Hub for operation.

## Description

Water Level Sensor

Review: Well made and easily installed. Works effectively and support service professional if required.
Review: I bought this to monitor the water level in my Christmas tree stand, and it’s been perfect for that. It alerts me when the water gets low so I can refill it before the tree dries out—no more needles all over the floor. Setup was easy, alerts are reliable, and the LoRa range works great even with the tree not near my router. For a non-traditional use case, it’s worked flawlessly. Simple solution that actually does what it’s supposed to do.

## Features

- MANY USES Drain Pump Alarm, AC Condenser Pan Overflow Alarm, Strugged/Clogged Flapper Toilet Interior Leakage Alarm for Aquarium Pond Fountain Rain Drum/Tank Reservoir Tank High Low Level Detector
- YoLink Hub required. This device will not work without our hub (not included). We recommend SpeakerHub, Chat, Custom Tone & Sound and Hub. SpeakerHub search B09FSS95G9, original hub search B07TQLKQLJ
- Save money and get more. YoLink Smart Sensors are not only economical, but are also part of a family of products that are compatible with water level monitoring sensors. High or low level detection keeps water off or on, flip pump on/off and activate siren and light Automatic
- Wireless. The sensor is wireless, battery powered, and features LoRa based extreme long range wireless (up to 1/4 mile outdoor distance). ), so you can place the sensor anywhere that can't work with WiFi or old RF technology. No cables, conduit, raceway, trench or electrician needed
- Easy DIY installation with our innovative pendant mount style float switch. Simply hang the float switch on the monitoring tank or container. Stainless steel washers on float switches provide stability against waves, and provide edge/sidewall protection. Includes tie wrap and tie wrap mount
- Know it now! Smart device with full function app. Please pay attention to products that need to hear the alarm. Available Notifications Type: Push app notifications, email, SMS, activate siren or light, sound or voice messages from SpeakerHub. Each account sends 5 SMS monthly for each device and 5 additional free of charge. YoLink siren, switch, plug, relay and SpeakerHub sold separately
- Alarm The sensor has a built-in 105dB sound for local, indoor alarm. Or add an optional remote siren alarm or other YoLink alarm products. Search the siren alarm in B0887SMPKK
- Looking for water depth monitoring? Our new water depth sensor includes a hydraulic sensor probe that can measure a depth of up to 16 feet (data is reported in depths centimeters). Search B0C5QX3HHQ. Looking for an original water level monitoring sensor with probe? For applications that aren't practical on float switches, such as washing machine drain backup detection, please refer to the Leak Sensor 3. Search B08T8X4XWN
- Looking for an optional sturdy wall bracket? Optional brackets provide additional protection against impacts, accidental tampering and cord removal. Search B0C4PFTFM2
- Compatible with Alexa, IFTTT, Home Assistant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C3KXCY8B |
| Amazon Bestseller | #1,058,762 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #2,258 in Household Sensors & Alarms |
| Audible Noise | 105 Decibels |
| Battery Description | AA type |
| Brand | YoLink |
| Built-In Media | Detector |
| Color | Leak Sensor 2 |
| Compatible Devices | Android Phone, iPhone |
| Control Method | App |
| Customer Reviews | 4.2 4.2 out of 5 stars (162) |
| Item Dimensions L x W x H | 6.2L x 6.2W x 2H cm |
| Item Type Name | Water Level Sensor |
| Manufacturer | YOSMART |
| Maximum Range | 1320 Feet |
| Mfr Part Number | YS7904-UC |
| Model Number | YS7904 |
| Mounting Type | Wall Mount |
| Number of Batteries | 2 AAA batteries required. (included) |
| Power Source | Battery Powered |
| Sensor Technology | Sound Sensor |
| UPC | 810121540848 810121540565 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** YoLink
- **Color:** Leak Sensor 2
- **Compatible Devices:** Android Phone, iPhone
- **Power Source:** Battery Powered
- **Product Dimensions:** 6.2L x 6.2W x 2H cm

## Images

![YoLink LoRa Smart Water Level Monitor Sensor, Wireless Battery Operated Float Switch Alarm, Drain Pump Alarm, AC Concentrated Water Overflow Tank Level, Toilet Leak Sensor, 105dB Sire, YoLink Hub Required - Image 1](https://m.media-amazon.com/images/I/51UgTj08bNL.jpg)
![YoLink LoRa Smart Water Level Monitor Sensor, Wireless Battery Operated Float Switch Alarm, Drain Pump Alarm, AC Concentrated Water Overflow Tank Level, Toilet Leak Sensor, 105dB Sire, YoLink Hub Required - Image 2](https://m.media-amazon.com/images/I/81vfjLNiemL.jpg)
![YoLink LoRa Smart Water Level Monitor Sensor, Wireless Battery Operated Float Switch Alarm, Drain Pump Alarm, AC Concentrated Water Overflow Tank Level, Toilet Leak Sensor, 105dB Sire, YoLink Hub Required - Image 3](https://m.media-amazon.com/images/I/81MDwNqrZzL.jpg)
![YoLink LoRa Smart Water Level Monitor Sensor, Wireless Battery Operated Float Switch Alarm, Drain Pump Alarm, AC Concentrated Water Overflow Tank Level, Toilet Leak Sensor, 105dB Sire, YoLink Hub Required - Image 4](https://m.media-amazon.com/images/I/717iOETiK6L.jpg)
![YoLink LoRa Smart Water Level Monitor Sensor, Wireless Battery Operated Float Switch Alarm, Drain Pump Alarm, AC Concentrated Water Overflow Tank Level, Toilet Leak Sensor, 105dB Sire, YoLink Hub Required - Image 5](https://m.media-amazon.com/images/I/71U+l60v58L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***T on February 18, 2026*

Well made and easily installed. Works effectively and support service professional if required.

### ⭐⭐⭐⭐⭐ Review
*by M***M on January 29, 2026*

I bought this to monitor the water level in my Christmas tree stand, and it’s been perfect for that. It alerts me when the water gets low so I can refill it before the tree dries out—no more needles all over the floor. Setup was easy, alerts are reliable, and the LoRa range works great even with the tree not near my router. For a non-traditional use case, it’s worked flawlessly. Simple solution that actually does what it’s supposed to do.

### ⭐⭐⭐⭐⭐ Review
*by B***R on July 17, 2025*

This has been a great product for us. As we don’t have an auto filler for the pool, I was able to use this to warn if the pool level was low so we can fill the pool when needed. Using Alexa, we automated a routine to automatically turn the hose on when the water level is low. Also, I put the unit inside an electrical enclosure and drilled out a small hole for the level sensor. This keeps it protected from the elements.

## Frequently Bought Together

- YoLink LoRa Smart Water Level Monitoring Sensor, Wireless Battery-Powered Float Switch Alarm, Sump Pump Alarm, AC Condensate Overflow, Tank Level, Toilet Leak Sensor, 105dB Siren, YoLink Hub Required
- YoLink Hub, 1/4 Mile Super Long Range Smart Hub LoRa Enabled Smart Home Automation Bridge Home Security Monitoring System - Central Controller for YoLink Smart Home Devices - White
- YoLink Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required

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**Shop now:** [https://www.desertcart.hr/products/741961176-yolink-lora-smart-water-level-monitor-sensor-wireless-battery-operated](https://www.desertcart.hr/products/741961176-yolink-lora-smart-water-level-monitor-sensor-wireless-battery-operated)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-23*