(1) For the purpose of carrying out an investigation, an investigator may enter and remain on any premises to exercise the powers in section 577 .(2) In the case of a trust account investigation, the investigator (a) may enter any premises, other than residential premises, without the need for consent or a search warrant; and(b) may enter residential premises (i) at any time with the consent of the occupier; or(ii) under the authority of a search warrant issued under this Part.(3) In the case of a complaint investigation, the investigator may only enter any premises (a) at any time with the consent of the occupier; or(b) under the authority of a search warrant issued under this Part.(4) The investigator must, at the reasonable request of a person apparently in charge of the premises or any other person on the premises, produce evidence of his or her appointment.Penalty: Fine not exceeding 50 penalty units.