E+E Elektronik EE240 User Manual page 11

1. Interval rotary switch "TIME":
Set the transmission interval. The transmission interval is equal to the measurement (sampling) interval:
Switch positon
0
1
2
3
4
5 = default
6
7
8
9
A
B
C
D
E
F
Tab. 2 Interval rotary switch position corresponding to sampling interval
Please note: The typical battery lifetime at 23 °C (73 °F) for a transmitter measuring T or RH/T with a
transmission interval of 5 min is >1 year.
Very important:
• For extended battery life time, set the transmission interval of all transmitters to the maximum
time meaningful for the applications. Please consider that in most applications the CO
variations are rather slow.
• For CO measurement as well as for short measuring intervals, it is strongly recommended to use
2
external power supply.
2. Push-button "CONNECT":
Use the CONNECT button for
• establishing the connection between the transmitter or router and the base station while setting up the
network, see chapter 5.1 Hardware Settings. Please note that for connecting the EE245, it has to be
battery powered.
• showing the signal strength [%] on the optional display of the transmitter. Press the CONNECT button
for min. 1 s while connecting the external supply unit or inserting the 4th battery. The display will
return to normal operation layout after displaying the signal strength for 60 s.
3. Display:
The EE244 display alternately shows the latest reading for each measurand (RH, T, CO
updated according to the selected transmission interval, see Tab. 2
The display can easily be replaced by the user. To do so, gently pull off the old (defect) display from the
electronics board and carefully plug in the new display. Please mind the display orientation, see Fig. 7.
Furthermore, an EE244 originally without display can be fitted with display. Order number for a
replacement display + front cover is D07W, see accessories in the EE240 data sheet as well as chapter
9 Spare Parts.
The pluggable display makes it possible to use successively one single display for several EE244
during the wireless network setup, see 5.1 Hardware Settings.
4. Battery compartment:
Use four 1.5V, AA / LR6 alkaline batteries (not in the scope of supply).
5. / 3. Jumper „J1" (EXT/BAT):
Select between 'battery power' and 'external power'.
User Manual EE240 Wireless Sensor Network
Interval
20 s
30 s
45 s
1 min
2 min
5 min
10 min
15 min
20 min
30 min
45 min
60 min (1 hr)
90 min (1.5 hrs)
120 min (2 hrs)
180 min (3 hrs)
240 min (4 hrs)
, RH, and T
2
). The data is
2
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