The door sensors monitor the open and closed status of chiller and freezer room doors. The maximum range of each door sensor is 25 m (82 ft) with a line of sight to the gateway or a repeater.
Each door sensor ships with a set of stickers that display a serial code. The serial code on the stickers matches the serial code on the side of the sensor. Attach these stickers to the refrigeration units to track and trace the door sensors. See the following figure for an example of a door magnet and reed switch.
Figure 1. Door magnet and reed switch
