Detector

A detector for mounting to a container defining an internal space to determine occupancy of the container, the detector comprising:

• a housing defining an internal volume;
• a mounting arrangement for mounting the housing to a container;
• a sensor arrangement comprising a first sensor disposed within the housing, the first sensor configured to determine a concentration of carbon dioxide within an internal space of a container;
• and
• a control system configured to receive input values from the first sensor and to provide an output when the concentration of carbon dioxide exceeds a predetermined value,
• wherein the housing is substantially sealed for restricting the ingress of debris into the housing, and
• wherein the housing comprises an inlet such that air is able to flow into the housing and over the first sensor,
• wherein the inlet has a diameter in the range of 1 mm to 3 mm and/or wherein the housing comprises a cover covering the inlet in the form of a semi-permeable membrane configured to allow the passage of air therethrough and configured to prevent the passage of water therethrough.

A detector for mounting to a container defining an internal space to determine occupancy of the container, the detector comprising:

• a housing defining an internal volume;
• a mounting arrangement for mounting the housing to a container;
• a sensor arrangement comprising a first sensor disposed within the housing, the first sensor configured to determine a concentration of carbon dioxide within an internal space of a container;
• a power storage unit disposed within the housing for providing power to the detector;
• and
• a control system configured to receive input values from the first sensor and to provide an output when the concentration of carbon dioxide exceeds a predetermined value,
• wherein the housing is substantially sealed for restricting the ingress of debris into the housing,
• wherein the housing comprises an inlet such that air is able to flow into the housing and over the first sensor, and
• wherein the detector comprises an anti-vibration mounting arrangement configured to dampen vibrations between the housing and the power storage unit and/or to dampen vibrations between the detector and a container, in use.