Do these have a guarantee I bought 2 in Sept 2015 no longer working?

I have not seen any doc' regarding guarantee, but I would have thought there would be a years guarantee: however, you have your normal statuary rights by law, the item in question would be expected to give a reasonable service. I would personally contact the supplier via Amazon, if no joy: contact the citizen advice in your area.

Please can anyone advise me if I set the frequency and the sensor markings both to the same number?

You can if you want to but you don't have to. The frequency setting is the loudness and the sensor setting is the distance you need to detect. We have ours set the same, both at the highest number for maximum effect.

Is it better to set these to the highest number as in cats 3-5 therefore set it to 5 ?

I use them set at 4. I have noticed that as the batteries get low cats do return with less frequency than before I installed the devices. I would recommend frequent checking the devices for output. I am also going to buy rechargeable batteries and may buy additional devices tp cover potential blind spots

Does it need a water hose

No problem t not a water feature and it’s a high-pitched sound which cats don’t like

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PestBye® Battery Operated Cat Repellent - Ultrasonic Cat Scarer - Set of 2 - Batteries Included

PestBye® Battery Operated Cat Repellent - Ultrasonic Cat Scarer - Set of 2 - Batteries Included

Product ID: 58855117

Details

Brand
Pestbye
Colour
Green
Is electric
Yes
Item weight
454 g
Material
Metal-Plastic
Style
Modern

📡7m motion & heat detection

🔋Batteries included, long-lasting

🌧️Fully weatherproof design

$99.44

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Description

🚫🐱 Keep your outdoor space cat-free, effortlessly and silently!

HASSLE FREE POWER - Batteries included with up to several months of operation
SILENT BUT DEADLY - Ultrasonic frequency repels cats without disturbing humans
DOUBLE THE DEFENSE - Set of 2 units for wider coverage and maximum cat deterrence
ALL WEATHER GUARDIAN - Durable, weatherproof casing for year-round outdoor use
PLUG PLAY PROTECTION - Easy installation with zinc-coated stakes or wall mounts

The PestBye® Battery Operated Cat Repellent is a set of two ultrasonic devices that detect movement and body heat up to 7 meters away, emitting a high-frequency sound that deters cats without bothering humans. Featuring easy installation with zinc-coated stakes or wall mounts, long-lasting battery life with included batteries, and a fully weatherproof design, this modern, lightweight repellent offers an effective, humane solution to protect gardens, patios, and yards from unwanted feline visitors.

Specifications

ASIN	B00W79PPD4
Best Sellers Rank	38,418 in Pet Supplies ( See Top 100 in Pet Supplies ) 5 in Sonic Cat Repellents
Brand Name	Pestbye
Colour	Green
Country Of Origin	China
Customer Reviews	3.7 3.7 out of 5 stars (113)
Is Electric	Yes
Item Weight	454 g
Manufacturer	Primrose
Manufacturer Warranty Description	2 Year Warranty
Material Type	Metal-Plastic
Style Name	Modern
Unit Count	2.0 count

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$99.44

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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