range query regarding worldwide version of 2.4GHz XBee-PRO

hi guys,
i have a query regarding the 2.4GHz XBee-PRO 802.15.4 OEM RF Modules.
on the product page: http://www.digi.com/products/wireless/point-multipoint/xbee-series1-module.jsp#overview

the power output of this module is listed as:
* 63 mW (+18 dBm) North American version
* 10 mW (+10 dBm) International version

the range is listed as:

Indoor/Urban range: Up to 300 ft (90 m)

Outdoor/RF line-of-sight range: Up to 1 mile (1.6 km) RF LOS

obviously the range is going to be different depending on the power output.
i suspect the range listed is for the +18dBm version.
as am outside the US can you indicate what sort of range can be expected on the +10dBm version?

thanks in advance and apologies if i have missed this information elsewhere,


Yes, the range is measured for the US output power. Though the international range values aren’t listed, we suspect they would be approximated 75% of the US module’s range.

thanks for the clarification.