Does this use an app ?

No u don’t need a app. They have 10 year battery in them

Would high humidity set these off? Want for a fish tank room

It needs water to make the connection and set the alarm off. I have mine under the sink units where the water would goto if there was a leak. If in the high humidity there was condensation on the devices then I think they would alarm. It’s that much condensing humidity you kind of have a leak and would need to control the humidity. I hope this helps, good luck !

Will this still work if completely submerged? I know people have said the alarm is loud but was thjnking if someone wasnt home...

It will not work if completely submerged, however, it should float if the water gets to that level. There are other products on the market which will connect to you phone & alert you directly if away at any time. I have these installed as well, for precaution. Trust this helps

Does this product work with reverse osmosis (ro) water, which has a significantly lower level of conductivity than standard tap water?

As it works on resistance I doubt it will work with RO , however the RO will pick up impurities as it runs along a surface so depends on your use case .

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SEBSON Water Alarm Mini 10 Year Long Term Lithium Battery | Small Water Detector 60x60x24.2mm, Leak Sensor with Lithium Battery, Set of 2

Product ID: 102684546

Details

Colour
White
Brand
SEBSON
Power source
Battery
Product dimensions
6L x 6W x 2.4H
Battery description
3 V

📏Compact 60x60x24.2mm size

🔊85dB loud water alert

🔋10-year lithium battery life

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Description

💧 Stay dry, stay ahead—never miss a drop with SEBSON’s 10-year water guardian!

INSTANT FLOOD ALERT - An 85dB alarm ensures you’re the first to know when water is detected—no more costly surprises.
VERSATILE PLACEMENT - Perfect for kitchens, bathrooms, garages, and boiler rooms—protect your home’s most vulnerable spots.
SMART BATTERY WARNING - Low battery? The detector alerts you early, so you’re never caught off guard.
DECADE LONG PEACE OF MIND - Powered by a built-in 10-year lithium battery—set it and forget it.
MINI SIZE MAJOR PROTECTION - Discreet 60x60x24.2mm footprint fits seamlessly under sinks, in basements, or behind appliances.

The SEBSON GS153 Water Alarm Mini is a compact, floor-mounted water detector featuring a powerful 10-year lithium battery and an 85dB alarm. Designed for early water leak detection in indoor spaces like kitchens, bathrooms, and basements, it offers reliable, long-term protection with smart low-battery alerts to keep your home safe from costly water damage.

Specifications

Number of batteries	1 CR123A batteries required. (included)
Voltage	3 Volts
Control method	Touch
Noise level	85 Decibels
Mounting type	Floor Mount
Maximum range	1 Metres
Sensor technology	Contact Sensor
Manufacturer	SEBSON
Part Number	2_X_WD_GS153
Product Dimensions	6 x 6 x 2.42 cm; 170 g
Batteries	1 CR123A batteries required. (included)
Item model number	2_X_WD_GS153
Size	2 piéces
Shape	Square
Item Package Quantity	1
Number of Pieces	2
Usage	Indoor use only
Batteries included?	Yes
Batteries Required?	Yes
Battery Cell Type	Lithium
Average Battery Life	10 years
Item Weight	170 g

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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