Weidmuller WI-I/O-9-U2: Wireless Mesh I/O & Gateway User Manual V1.2.2 - Manual (Page 110)

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Draw
Transmit Current
Draw
500mA @ 12V (1W), 250mA @ 24V (1W)
Note: Specifications subject to change.
1) Country specific configuration (specified at time of order)
2) 900MHz ISM Band
3) 869MHz ISM Band (Europe)
4) 18 Channels (New Zealand)
5) Typical Maximum Line of Sight Range
6) Maximum Distance 1200m (3937ft)