Temperature And Humidity Sensor - Banner SureCross DX80 Product Manual

62.5 ms 125 ms
2 0.20 0.40
Note, battery life calculations are based on the sensor operating 24 hours a day, 365 days a year.
7
6
5
4
3
2
1
0
62.5 ms
For each sensor characterized, a boost voltage and warmup time was specified. The sample and reports rates were varied
to calculate the estimated battery life. For example, a Banner Optical sensor, model SM312DQD-78419, set to a boost
voltage of 5 volts, a warm-up time of 4 milliseconds, and a sample and report rate of 16 seconds, should have a battery
life of just over 6 years.
The curves for discrete devices represent a "worst case" as far as battery use because we are assuming for each sample of
the sensor's output a change in state has occurred (e.g., target present to target absent or vice versa), sending a radio
message from Node to Gateway. No messaging occurs unless there is a change to report. Actual battery life depends on
how many state changes actually occur.
All battery life calculations are approximations based on a strong radio signal. Weaker radio connections and missed pack-
ets will decrease the battery life.

8.3.3 Temperature and Humidity Sensor

The following battery life calculations are based on reading/reporting one register or reading/reporting the contents of all
three registers.
72
Sample and Report Rates
250 ms
0.72
125 ms 250 ms
Sample and Report Rates
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SureCross DX80 and Performance DX80 Product Manual
500 ms 1 second
1.27 2.05
SM312DQD-78419
Bi10U-M30-AP6X-H1141
500 ms 1 sec
2 seconds 16 seconds
2.99 5.07
2 sec 16 sec
Rev. J