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Wika Model HLS-M Float Switch

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With its compact design, the model HLS-M float switch for horizontal installation in miniature design is ideally suited for use in small tanks, for indicating minimum/maximum levels.

The float is attached to a supported, swivelling lever and moves with the level of the medium being measured. By means of a permanent magnet, when a preset switch point is reached, a reed contact (inert gas contact) is actuated.

By using a magnet and reed contact the switching operation is non-contact, free from wear and needs no power supply. The contacts are potential-free.

The switching function refers to a rising liquid level: Standard use as normally open contact (can be used as normally closed contact by a 180° rotation).

The float switch is simple to mount and maintenance-free, so the costs of mounting, commissioning and operation are low.

Special features

    • Lateral installation in the tank
    • Operating limits:
      - Operating temperature: T = -40 ... +120 °C
      - Operating pressure: P = 5 bar
      - Limit density: ρ ≥800 kg/m3
    • Plastic and stainless steel versions
    • Space-saving installation
    • Switch consists of only one component


    • Level monitoring and level indication of liquids
    • Level detection for almost all liquid media
    • Pump and level control
    • Alarm signals
    • Dry-run and overflow protection
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