The nominal range of the sensor.
The specific meaning of this parameter depends on the type of device (see "Sensor"); however, in most cases, we are actually talking about the maximum detection range. So, for a motion sensor, the range is the maximum distance at which the sensor is able to detect a moving object; for a non-contact break sensor, this is the maximum distance to the glass at which the device can be installed; for a vibration sensor — the greatest distance to a powerful source of vibrations (for example, a rotary hammer that breaks a protected wall). Only IR barriers are a special case: in them, the range of action corresponds to the greatest distance over which the emitter and the beam receiver (or the emitter and the surface from which the beam is reflected) can be separated.
Anyway, it must be borne in mind that the range is usually indicated for perfect, at best, for some average conditions. So when choosing, it is worth taking a certain margin — this will give an additional guarantee in case of an unfavorable situation (for example, fog that interferes with the operation of the IR sensor). As for specific values, in many sensors (mainly intended for indoors) the operating range
does not exceed 10 m.
11 – 14 m can be called an average value, and in the most "long-range" models this figure reaches
15 m or more.
