Figure 3: ZFR1831 Router ceiling grid installation mounting view
Note: Use Grainger item #45DN38 or equivalent. For more information visit https://
www.grainger.com/
Wireless signal transmission considerations
The effective transmission range/distance for indoor applications varies because of wireless signal
absorption and reflection due to metal obstructions, walls (or floors), and furniture found in typical
building interiors.
Transmissions may use up to 30 hops to transmit a message to the coordinator. In a well- designed
system, the layout design should minimize the required hops based on the recommended
transmission ranges and should typically be kept below five. Information on determining the
numbers of hops being used is covered in the WRG1830 Wireless Gateway Users Guide (LIT-12013550).
The WRZ sensors list a lower line of sight range because they transmit at a lower power (10mW)
than the wireless routers (100mW) and are typically mounted in the occupied spaces where there is
more attenuation due to occupants and furnishings.
5ZFR1831 Pro Series Wireless Router Installation Guide
Johnson Controls - CONFIDENTIAL
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