| 摘要 |
- Alarm device. - The alarm device includes: . an electrical power supply source (3), . at least one controlled electrical contact (2), sensitive to the variation in position of the object, . at least one multi-pole changeover switch (4) at least one of the poles of which is not linked to the voltage source, so as to define a coding position for the changeover switch, while the other poles are connected together to the power supply source, . and an element (5) for triggering a warning means (6), as soon as closing of the sensitive contact (2) occurs as a result of a variation in relative position of the object, and as long as the changeover switch (4) is not placed in its coding position. <IMAGE>
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