--- product_id: 527896895 title: "YoLink Water Level Sensor with Float Switch, 105 dB, YS7904F" brand: "yolink" price: "488 kr" currency: DKK in_stock: true category: "Yo Link" url: https://www.desertcart.dk/products/527896895-yolink-water-level-sensor-with-float-switch-105-db-ys7904f store_origin: DK region: Denmark --- # LoRa wireless up to 1/4 mile 105dB built-in siren alarm 2 AA batteries, 1-2 years life YoLink Water Level Sensor with Float Switch, 105 dB, YS7904F **Brand:** yolink **Price:** 488 kr **Availability:** ✅ In Stock ## Summary > 💧 Stay dry, stay connected — the future of water level monitoring is wireless and worry-free! ## Quick Answers - **What is this?** YoLink Water Level Sensor with Float Switch, 105 dB, YS7904F by yolink - **How much does it cost?** 488 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/527896895-yolink-water-level-sensor-with-float-switch-105-db-ys7904f) ## 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 - • **Loud & Local Alarm:** Built-in 105dB siren ensures immediate on-site alerts, complemented by optional remote sirens for full coverage. - • **Smart Alerts Anywhere:** Get instant push, email, SMS, or Alexa notifications so you never miss a leak or overflow, no matter where you are. - • **DIY Pendant Float Switch:** Easy to install with stainless steel ballast for stable, wave-resistant water level detection—no electrician needed. - • **Seamless Home Automation:** Integrates with YoLink ecosystem, Alexa, IFTTT, and Home Assistant for automated pump control and alarm activation. - • **Ultra-Long Range Wireless:** LoRa tech delivers up to 1320 feet of reliable, cable-free monitoring—perfect for hard-to-reach spots. ## Overview The YoLink LoRa Smart Water Level Monitoring Sensor is a wireless, battery-powered float switch alarm designed for versatile water level detection in sump pumps, tanks, toilets, and more. Utilizing long-range LoRa technology, it offers up to 1/4 mile connectivity without WiFi or wiring. Featuring a 105dB siren and smart app notifications (push, email, SMS, Alexa), it integrates seamlessly with the YoLink ecosystem for automated water management and peace of mind. Easy DIY installation and 1-2 year battery life make it a reliable, professional-grade solution for proactive water monitoring. ## Description desertcart.com: YoLink Water Level Sensor with Float Switch, 105 dB, YS7904F | High/Low-Water Alerts with Adjustable Float Position, Works with Alexa, LoRa YoLink Protocol Up to 2034 Feet, Hub Required : Industrial & Scientific ## Features - MANY APPLICATIONS! Sump pump alarm, AC condensate pan overflow alarm, runaway toilet/jammed flapper, internal toilet leak alarm, fish tank, pond, fountain, rainwater drum/tank, cistern, water storage tank high or low level detector - SPEND LESS, GET MORE! YoLink smart sensors are not only economical but they are part of a growing family of products compatible with your Water Level Monitoring Sensor. Shut off or turn on water on high or low level detection, turn pumps on/off, activate sirens and lights. Automatically. - WIRE LESS! The sensor is wireless and battery-powered, with LoRa-based extreme long-range wireless (up to 2,034 feet open-air!), so you can put your sensor where WiFi and older RF technologies can't go. No cables, conduit, raceway, trenching, or electrician required! - EASY DIY INSTALLATION with our innovative pendant-mount style float switch. Simply hang or suspend the float switch into the monitoring tank or container. The float switch's stainless steel washers provide ballast for stability against wave action, and also provide edge/sidewall protection. Tie wraps and tie wrap mount included. - KNOW NOW! This is a smart device with a full-featured app. Beware of products that require you be in earshot of the alarm. Types of notifications available to you include: app push notifications, email, SMS, siren or lighting activation, SpeakerHub sound or spoken messages. Each account receives 5 SMS per month per device, plus 5, free. YoLink Siren, Switch, Plug, Relay or SpeakerHub purchased separately. - ALARMING! The sensor has a built-in 105dB sounder, for local, indoor alarms. Or, add an optional remote Siren Alarm or other YoLink alarm product. Search B0887SMPKK for the Siren Alarm. - Looking for water depth monitoring? Our new Water Depth Sensor includes a water pressure sensor probe, capable of measuring water depths up to 16 feet (data reported in centimeters deep). Search B0C5QX3HHQ. Looking for the original Water Level Monitoring Sensor with probe? See the Water Leak Sensor 3, for applications not practical for a float switch, such as for washing machine water drain pipe backup detection. Search B08T8X4XWN - Looking for the optional ruggedized wall-mount bracket? The optional bracket provides the sensor with additional protection against impact, casual tampering and cord removal. Search B0C4PFTFM2 - Compatible with Alexa, IFTTT and Home Assistant. - YoLink Hub is REQUIRED! This device will not operate without one of our hubs, not included. We recommend SpeakerHub, our talking, custom tone & sound, hub. Please search B09FSS95G9 for the SpeakerHub, or B07TQLKQLJ for the original Hub. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C3KXCY8B | | Audible Noise | 105 db | | Battery Description | AA | | Best Sellers Rank | #11,140 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #15 in Water Detectors & Alarms | | Brand | YoLink | | Built-In Media | Detector | | Color | Water Leak Sensor 2 | | Compatible Devices | Android Phone, iPhone | | Control Method | App | | Customer Reviews | 4.5 out of 5 stars 944 Reviews | | Item Dimensions L x W x H | 2.44"L x 2.44"W x 0.8"H | | Item Highlight | High/Low-Water Alerts with Adjustable Float Position, Works with Alexa, LoRa YoLink Protocol Up to 2034 Feet, Hub Required | | Item Type Name | Water Level Sensor | | Manufacturer | YOSMART | | Manufacturer Warranty Description | 2 Years | | Maximum Range | 1320 feet | | Mfr Part Number | YS7904-UC | | Model Number | YS7904 | | Mounting Type | Wall Mount | | Number of Batteries | 2 AAA batteries required. (included) | | Number of Items | 1 | | Power Source | Battery Powered | | Product Dimensions | 2.44"L x 2.44"W x 0.8"H | | Sensor Technology | Sound Sensor | | UPC | 810121540848 810121540565 | | Unit Count | 1 Count | ## Product Details - **Brand:** YoLink - **Color:** Water Leak Sensor 2 - **Compatible Devices:** Android Phone, iPhone - **Power Source:** Battery Powered - **Product Dimensions:** 2.44"L x 2.44"W x 0.8"H ## Images ![YoLink Water Level Sensor with Float Switch, 105 dB, YS7904F - Image 1](https://m.media-amazon.com/images/I/51UgTj08bNL.jpg) ## Available Options This product comes in different **Set** options. ## 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 --- ## 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.dk/products/527896895-yolink-water-level-sensor-with-float-switch-105-db-ys7904f](https://www.desertcart.dk/products/527896895-yolink-water-level-sensor-with-float-switch-105-db-ys7904f) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-10-12*