Latest model inclinometer with laser, IP54 waterproof, junk

Product Description
From the shop where it was purchased:
This is a digital protractor that supports a measurement range of 4x90°.
- Capable of measuring absolute angle, relative angle, and inclination.
- Built-in magnets on all four sides of the main unit allow for secure attachment to metal surfaces.
- Features a built-in rechargeable USB battery and an auto power-off function.

How to Operate:
Press the ON/OFF button once for absolute angle (calibrated to the factory standard).
Press the ON/OFF button repeatedly to switch laser projection modes:
Left → Right → Both Sides → Off → Right → Left → Both Sides → Off
Press and hold the ON/OFF button to turn off the power.
Press the ZERO button to reset the reference (relative angle).
Press HOLD to fix the display.

Thank you for looking.

Although I purchased this item, I am listing it as a junk item because I noticed unstable operation during test use.
(Since the warranty period from the store has expired, I could not return it.)

Please refer to the screenshots of the product page images from when I purchased it for the main specifications and functions.

Although it is a new and unused item, it has been test-used for operation confirmation.

The symptoms I confirmed are as follows:

- The ON/OFF button is unresponsive, and the laser mode does not switch with a single press. (It works after pressing the ON/OFF button a few times.)
- Even when turned off by holding the button, the display may reappear. (It turns off after repeating a few times. *Individual differences may apply.)
- After automatic power-off, it may not turn on with a single press when powered on again. (It works after pressing a few times.)
- The magnetic adhesion strength varies depending on the material and paint condition of the installation surface.

Regarding the digital display and laser accuracy, I did not notice any issues visually, but since it has not been used in actual work, accuracy cannot be .

Due to the above conditions, please consider this item for repair/adjustment, or for parts or research purposes.

I purchased a large quantity, so bulk purchases are also welcome. We offer a 5% discount for purchases of 2 or more items.

As this is treated as a junk item, please refrain from returns or complaints.

[Condition]
New, unused (opened for photography and test use)

[Set Contents]
All items shown in the product images are included.
The instruction manual was in English.
*The method for zero correction will be added in the comments section.

[Packaging]
To offer the lowest possible price, the item will be shipped without its outer box, with simple packaging such as bubble wrap or an OPP bag.

Please understand this in advance.