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Signal Strength
WSDL versions 4.1.8.0 and later will also display wireless sensor signal strengths in the battery
status panel if the custom Weather Shield for Arduino is enabled. The hand-built version of the
weather shield using the RX3400 receiver module on a breakout board does not support this
feature.
Signal strengths are only approximate but are still useful for adjusting the receive antenna
location and tuning the length of the antenna. Sensors can be reliably received with signal
strengths at least as low as -90dBm. The receiver sensitivity level is somewhere between -100
and -110dBm. Depending on the exact circumstances, sensors with signal levels below -90dBm
may also be reliably received, or reception may become intermittent.