Electronic – Does anyone know what this component could be

It's not an official symbol.

Often times PCB designers will add in some of their own artwork. It appears to me that the lightning bolt was there to indicate that there is high voltage present. The clouds and island was some "artistic liberties" the PCB designer took. That kind of thing is not uncommon.

It's a tilt switch.
It has a ball in it which breaks a contact when it rolls away or moves away from contacts.
Try measuring the resistance with it in various orientations

The image below is copied from here

This page says about one similar:

• Tiny tilt switch type BT411-2 has a built in rolling ball (instead of mercury) so it doesn’t have the environmental health hazards that mercury tilt switches have.

• These and similar types are used in vibration car alarms, sneakers that blink, toys, etc.

Many here

Re your link:

Strøm: 2mA maks.
Størrelse: housing Ø5.2 × 14mm (leads + 15mm)
Maks. temperature: 100°C
non-active contact: 10 Mohm
active contact: +/- 5 ohm

2 mA current rating.
10 megohm open circuit
5 Ohms operated.
5.2 mm dia x 14mm long with 15mm leads.
Maximum temperature 100 C.