An electronic device comprising: - a housing; - an electronic circuit arranged within the housing; - a power source for providing electrical power to the electronic circuit; and - an anti-tampering arrangement comprising: - an electrical element (30; 35); and - a mechanical element coupled to the electrical element and a portion of the mechanical element extending from a surface of the housing, wherein the mechanical element is configured to attain a first position from a second position when the surface of the housing is mounted on a use-surface, and wherein - in the first position the electrical element acts on the electronic circuit for closing an electrical connection of the electronic circuit to avoid generation of an alarm signal; and - in the second position the electrical element is not acting on the electronic circuit for opening the electrical connection of electronic circuit to generate the alarm signal characterized in that the mechanical element comprises a first spring and a second spring, and a plate, and wherein a first end of first spring and second spring are firmly attached to the plate, and wherein a second end of first spring is attached to a second half of the housing, and wherein spring constant of first spring is smaller than spring constant of second spring, and wherein first spring is arranged coaxial with second spring. - a housing; - an electronic circuit arranged within the housing; - a power source for providing electrical power to the electronic circuit; and - an anti-tampering arrangement comprising: - an electrical element (30; 35); and - a mechanical element coupled to the electrical element and a portion of the mechanical element extending from a surface of the housing, wherein the mechanical element is configured to attain a first position from a second position when the surface of the housing is mounted on a use-surface, and wherein - in the first position the electrical element acts on the electronic circuit for closing an electrical connection of the electronic circuit to avoid generation of an alarm signal; and - in the second position the electrical element is not acting on the electronic circuit for opening the electrical connection of electronic circuit to generate the alarm signal - an electrical element (30; 35); and - a mechanical element coupled to the electrical element and a portion of the mechanical element extending from a surface of the housing, wherein the mechanical element is configured to attain a first position from a second position when the surface of the housing is mounted on a use-surface, and wherein - in the first position the electrical element acts on the electronic circuit for closing an electrical connection of the electronic circuit to avoid generation of an alarm signal; and - in the second position the electrical element is not acting on the electronic circuit for opening the electrical connection of electronic circuit to generate the alarm signal - in the first position the electrical element acts on the electronic circuit for closing an electrical connection of the electronic circuit to avoid generation of an alarm signal; and - in the second position the electrical element is not acting on the electronic circuit for opening the electrical connection of electronic circuit to generate the alarm signal