13
Figure 10
5.4 Best Practices for Wireless Communication
Note:
To insure proper communication, mount the remote sensor(s)
upright on a vertical surface, such as a wall.
Do not lay the sensor flat.
Wireless communication is susceptible to interference, distance, walls and
metal barriers. We recommend the following best practices for trouble free
wireless communication.
1.
Electro-Magnetic Interference (EMI)
. Keep the console several
feet away from computer monitors and TVs.
2.
Radio Frequency Interference (RFI).
If you have other 433 MHz
devices and communication is intermittent, try turning off these
other devices for troubleshooting purposes. You may need to
relocate the transmitters or receivers to avoid intermittent
communication.
3.
Line of Sight Rating.
This device is rated at 300 feet line of sight
(no interference, barriers or walls) but typically you will get 100 feet
maximum under most real-world installations, which include
passing through barriers or walls.
4.
Metal Barriers.
Radio frequency will not pass through metal
barriers such as aluminum siding. If you have metal siding, align
the remote and console through a window to get a clear line of
sight.
The following is a table of reception loss vs. the transmission medium.
Each “wall” or obstruction decreases the transmission range by the
factor shown below.
Medium
RF Signal Strength Reduction
Glass (untreated)
5-15%
Plastics
10-15%
Wood
10-40%
Brick
10-40%
Concrete
40-80%
Metal
90-100%
