Can the entire sensor unit be submerged in the pool? Not just the cable part?

No, just the cable. We have plans to make a floating sensor for pools, but until then, you need to put the sensor where it will not be submerged. This is not a fully company-encouraged solution but some customers put these in a tupperware style sealed container, drill a hole for the probe, caulk that up, and leave it to float in the pool or hot tub. It's a little DIY and not the best solution but I wanted to share that with you in case that might be an option for you. Enjoy! Eric with YoSmart

Can this be used to measure temp inside a chest freezer? Will signal get out of the chest freezer?

I have this YoLink model inside my chest freezer and refrigerator: Smart Wireless Temperature / Humidity Sensor Wide Range (-22 to 158 degrees) for Freezer Fridge Monitoring Pet Cage/Tank Monitoring Smartphone Alerts, Works with Alexa IFTTT, 2 Pack - Hub Included The model you’re asking about, I have one outside and one in my garage. The model in my freezer and refrigerator works great. If you already have a hub, I don’t see why the model you’re asking about wouldn’t work inside a freezer.

How to replace the two AAA batteries?

Remove 4 small rubber "pads" at the corners. Remove 4 small Phillips screws. Remove cover. Replace batteries. Reinstall.

Can I put this inside a water reservoir to detect when the water reaches a certain height?

We actually have a Water Level Monitoring Sensor that would be much better for your application. It comes with a water-sensitive probe, and the sensor can also work with standard float switches. It's not available now, but before too long we'll also offer a float switch as an accessory. Check it out! https://www.amazon.com/dp/B0BJPWL9L1?ref=myi_title_dp

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YoLink Weatherproof Fluid, Air, Surface Extreme High/Low Temperature Sensor with Probe, 1/4 Mile Long Range, YoLink Hub Required

YoLink Weatherproof Fluid, Air, Surface Extreme High/Low Temperature Sensor with Probe, 1/4 Mile Long Range, YoLink Hub Required

Product ID: 396627250

Details

Age range (description)
Adult
Brand
YoLink
Colour
White
Connectivity technology
LoRa
Display type
Digital
Included components
Battery

💧Weatherproof & waterproof design

📶1/4 mile LoRa wireless range

🌡️Extreme temp range ±0.1°C precision

56799 Ft

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Description

🌍 Stay cool, stay connected—wherever your world takes you.

BUILT FOR THE ELEMENTS - Rugged, weatherproof casing ensures reliable performance indoors or outdoors, rain or shine.
PRECISION THAT MATTERS - Ultra-sensitive probe delivers ±0.1°C resolution for pinpoint temperature monitoring in any environment.
SEAMLESS SMART INTEGRATION - Works exclusively with YoLink Hub for easy setup, Alexa voice queries, and powerful IFTTT automation.
UNMATCHED WIRELESS FREEDOM - LoRa tech powers a quarter-mile range with no WiFi needed—perfect for sprawling properties or tough signal spots.
INSTANT ALERTS ZERO DOWNTIME - Get real-time notifications via SMS, push, email, or siren—stay ahead of temperature risks effortlessly.

The YoLink Weatherproof Temperature Sensor with Probe offers precise ±0.1°C readings across extreme temperature ranges, leveraging LoRa wireless technology for a robust 1/4 mile range without WiFi. Designed for versatile applications from HVAC to aquariums, it features a durable waterproof build and integrates seamlessly with the YoLink Hub ecosystem for instant alerts and smart home automation.

Specifications

ASIN	B08Z3XH313
Age Range Description	Adult
Best Sellers Rank	184,306 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 825 in Temperature Probes & Sensors
Brand	YoLink
Colour	White
Connectivity Technology	LoRa
Customer Reviews	4.5 4.5 out of 5 stars (548)
Display Type	Digital
Immersion Depth	0.98 Inches
Included Components	Battery
Indoor Outdoor Usage	Outdoor
Item Length	2.44 Inches
Manufacturer	YoSmart
Manufacturer Part Number	YS8004-UC
Model Name	Weatherproof Wireless Smart Temperature Sensor w/Probe LoRa 1/4 Mile Extreme Long Range
Model Number	YS8004-UC
Number of Batteries	2 AAA batteries required. (included)
Outer Material	Plastic
Power Source	Battery Powered
Product Care Instructions	Wipe Clean
Resolution	0.1°F or 0.1°C
Response Time	500 Milliseconds
Reusability	Rechargeable
Special Features	Waterproof
Specification Met	Industry Standards
Style Name	Without Hub
UPC	850024791046
Unit Count	1.0 count
Upper Temperature Rating	158 Degrees Fahrenheit

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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56799 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hungary.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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