The cylindrical body B encloses a spring element C which operates one two micro-switches E. These micro-switches are factory preset to predetermined thresholds.

The following types of DYNALARME systems are available in a same fabrication standard :

61.25DAC1 or 61.35DAC1 – 1 contact when under a pressure force.
61.25DAC2 or 61.35DAC2 – 2 simultaneous or non simultaneous contacts when under a pressure force.
61.25DAT1 or 61.35DAT1 – 1 contact when under a traction force.
61.25DAT2 or 61.35DAT2 – 2 simultaneous or non simultaneous contacts when under a traction force.
61.25DACT or 61.35DACT – 1 contact when under a pressure force and 1 contact when under a traction force.