Panasonic KX-HJS100-W Sensor

I purchased this for home security, but I have some extra that I haven't used, so I'm selling it. I opened it once and attempted to attach it to my entryway, so the adhesive sticker is already applied to the main unit. Additionally, the spacer quantity confirmation sheet (cardboard) and lithium battery, which were originally included, are also not included.
If you are agreeable to these conditions, please proceed with your purchase.

Product Description:
Notifies you when your child returns home or if a window is unexpectedly opened.

This product is compatible with the 1.9GHz DECT standard.
If you are using this product in an environment where you receive CS digital broadcasts, the radio waves from this product may interfere with the antenna transmission path, potentially making it impossible to view certain channels.
Using a highly shielded satellite broadcast-compatible splitter, distributor, or connection cable may help reduce this interference.

External Dimensions (Height x Width x Depth):
- Main Unit: 126 x 28 x 23 mm (excluding double-sided tape)
- Magnet: 30 x 13 x 3 mm (including double-sided tape)
Weight:
- Main Unit: Approx. 60g (excluding battery)
- Magnet: Approx. 5g

This is a white sensor from Panasonic that allows you to monitor your home remotely from your smartphone.

- Brand: Panasonic
- Model Name: KX-HJS100-W
- Type: Sensor
- Color: White
- Special Features: Remote home monitoring via smartphone

Thank you for looking.