Question 1

Is there an adapter available to connect to a pull down hose/faucet?

Accepted Answer

Thank you for your question, Jess.
It's not compatible because the outlet of pull-down faucet doesn't have external or internal thread to connect to the motion sensor adapter.

Question 2

I bought one but i didn't check my faucet's compatibility before i order, is there another adapter i can buy? i still like to use the autowater.

Accepted Answer

The touchless faucet adapter is compatible with typical "Regular" thread size for a faucet.
"Regular" thread size is 15/16" female threaded or 55/64" male threaded, M22 x 1 male threaded or M24 x 1 female threaded.

Quick way to check the thread size of your current current aerator:
Remover the existing aerator from your faucet.
Place a quarter over the aerator. If your current aerator is about the size of a quarter, it means the thread size is "Regular".

In the package we give an adapter connector which is compatible with two of the four “Regular” thread size(M22 x 1 male threaded and M24 x 1 female threaded), these will fit our product directly. No additional adapter needed.

If your faucet are the other two “Regular” thread sizes(15/16" female threaded or 55/64" male threaded), you need to purchase another adapter connector to go with our product, we advise ASIN B07VXRBCCM .

Question 3

This automatic faucet sensor looks really nice, could someone tell me its pros and cons?

Accepted Answer

Honestly I can't complain about the touchless faucet sensor, if anything it would be that I still need a wrench to remove my old aerator, rust inside makes it difficult to remove by hand. When it's done, the rest of the installation is dummy-proof, instructions are pretty clear.
 
Pros: 2 sensors, one on the side runs water continuously until you wave over it to turn it off; other other one is on the bottom side of faucet adapter, it automatically turns water on/off with motion sensed. I trained my cat to use the bottom sensor as a cat fountain, now she's happy that she can drink fresh water! Speaking of which, I was worried that the troublemaker might trigger the sensor and leave water running all night, but this faucet sensor has an Anti-overflow feature. I tested it and it stopped water after a few minutes as described. 
 
Here's a tip that might help:
If sometimes I don't need its auto sensor function, I'll turn the faucet handle off, then wave on the upper sensor to activate its continuous mode, so it'll become an ordinary faucet again, faucet will only runs water once I switch on handle.

Question 4

Why isn't this compatible with a pull down faucet type ?

Accepted Answer

You can check this out ASIN: B08242Y9D1 . This one fits pull out type.

ASIN	B07VS94FSB
Best Sellers Rank	#448,503 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #611 in Kitchen Sink Aerators #693 in Faucet Aerators
Brand Name	Lightingson
Compatible Devices	M22, M24 threaded kitchen faucets
Customer Reviews	3.5 3.5 out of 5 stars (411)
Finish Types	Polished
Manufacturer	Lightingson
Manufacturer Part Number	GQU L28
Material Type	Metal
Model Number	GQU L28
Specification Met	BAA
Thread Size	M22 or M24

GQU Touchless Automatic Faucet Motion Sensor Adapter Tap Autowater For Kitchen Bathroom Sink, Hand Free Aerator, Smart Faucet Sensor (Null)

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