Sensor reading is always same as input voltage. Bad sensor? Did I damage it somehow?

If you wired it right, it should not be damaged. But this sensor is sensitive to other materials (not just water). Looks like a capacitive sensor. If I use mine close to a wood, or thick glass, it detects it. On free air, however, it should detect nothing. If you touch it it will detect you too.

I will be using this with the container that is not clear it’s a gray solid will this still detect through that color

container gray color does not affect the sensor

I’d like to know if it would work for filling glass bottles conected to a solenoid valve, bottles are filled with a 1/4 steel pipe

you would have to try with your bottle but my experience has been if it is setup properly AND you isolate the valve control with a optoisolator based relay ($2 on this site) you will be ok. I've setup mine to fill my coffee maker when low and shutoff when filled. High level sensor is the failsafe if the flow rate is exceptional. remember that the sensor is 5VDC device and valves are usually higher voltage (12 or more VDC). So again, the sensor can't drive the valve directly!! use a relay

Can someone recommend a PCB mounted mating connector for this?

A 4 pin pcb header will suffice.

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🚀 Stay ahead of leaks with smart, silent precision!

LEAKAGE ALARM READY - Instantly detects leaks and triggers alerts, safeguarding your space and peace of mind.
COMPACT LIGHTWEIGHT - Sleek 10g ABS build fits discreetly on any tank, blending seamlessly into your smart home setup.
ENERGY EFFICIENT DESIGN - Consumes just 5mA at 5V DC, perfect for continuous monitoring without power drain anxiety.
PRECISION SIGNAL PROCESSING - Breaks through container wall interference for accurate, real-time water level readings.
EFFORTLESS NON CONTACT DETECTION - No direct liquid contact means zero contamination risk and maintenance-free operation.

The Taidacent Non-contact Electronic Water Level Sensor leverages cutting-edge signal processing technology to deliver accurate, contamination-free liquid level detection through container walls. Operating at a low 5mA current with a compact ABS design, it ensures energy-efficient, maintenance-free monitoring ideal for water tanks, fish tanks, and leak detection systems.

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