Guidelines for locating TMR - Johnson Controls - LIT-12013954 - JC-TMR2400-x - Wireless Device - TMR Series Wireless Best Practices

TMR Series Wireless Best Practices

Johnson Controls
Product name
TMR Series Wireless Best Practices
Document type
Commissioning Guide
Document number
Revision date

Use information in this section to pre-determine if the location of the CEG Panel and TMR Routers provides a quality wireless network and to estimate the number of additional TMR repeaters required. Some items to keep in mind when reviewing a layout are:

  • The cable that connects a CEG or MS/TP Controller to its associated TMR can be up to 30 m (100 ft) long to allow for better placement of the TMR in the space.
  • Every TMR should be within 75 m (250 ft) (recommended) of at least two other routers/repeaters that are part of the same network (PAN).
    Note: Assuming 20 dBm Tx Power. See Table 1 for other recommended distances based on Tx Power setting.
  • Best practice is to keep the entire network (PAN) contained within a single floor or wing.
  • Minimize the number of hops (Router to Router communication) to transmit a message to the TMR connected to the CEG. Four or less hops are a good rule of thumb.

Splitting the PAN into smaller groups and adding an additional TMR coordinator should be considered in the following scenarios:

  • Building floors with a central atrium or courtyard.
  • Building floors with a central core made up of elevator shafts, stairwells, restrooms, kitchens, where most wireless controllers are located around the perimeter of the floor.
  • L or U shaped buildings where the wireless signal would need to travel outside to reach other wireless controllers.
  • Building floors with long corridors with wireless controllers on the outer walls, as in a dorm or hotel wing.