Nev. Rev. Stat. § 370.413
In order to obtain evidence of any violation of this chapter, the Department, its agents, and all peace officers and revenue-collecting officers of this State may enter and inspect, without a warrant during normal business hours and with a warrant at any other time:
(Added to NRS by 1965, 301; A 1975, 1714; 2005, 1193; 2007, 2057)