The information was largely sourced from the Radio Spectrum Management website of the New Zealand Government.  The website stated that the information was last updated on 23 July 2009.  It is reproduced here for the convenience of readers only and is incomplete.  We recommend readers to go to the RSM website for up to date information.

http://www.rsm.govt.nz/cms/licensing/types-of-licence/general-user-licences/short-range-devices/information-on-the-operation-of-wireless-lan-and-related-systems-in-the-2-ghz-and-5-ghz-bands

Under the provisions of General User Licences, various uses of radio spectrum are exempt from individual licensing fees. General User Licence bands are commonly known as "spectrum public parks", "unlicensed bands", or "class licence bands". In many instances the nature of the technologies employed, or the short operating ranges involved, limits the potential for interference between different application sharing the same spectrum.

2.4 - 2.4835 GHz Frequency Range, 1 watt peak eirp Power, any modulation
  
2.4 - 2.4835 GHz, 4 watt peak eirp, frequency hopping or digital modulation only
 
5.15 - 5.25 GHz, 200 mW peak eirp, any modulation, indoor W-LAN only
 
5.25 - 5.35 GHz, 200 mW peak, any modulation, W-LAN only
 
5.725 - 5.875 GHz, 1 watt peak eirp, any modulation
  
5.725 - 5.875 GHz, 4 watt peak, frequency hopping or digital modulation only
 
5.725 - 5.825 GHz, 200 watt peak eirp with a max 1 watt peak transmitter power, digital modulation only, Fixed Radio Link Devices (FRL) only