EXHIBIT 23(A) INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in this Registration Statement of Response USA, Inc. on Form S-3 of our report dated September 16, 1998 appearing in the Annual Report on Form 10-KSB for the fiscal year ended June 30, 1998 and to the reference to us under the heading "Experts" in the Prospectus, which is part of this Registration Statement. DELOITTE & TOUCHE LLP /s/ Deloitte & Touche LLP Philadelphia, Pennsylvania October 5, 1998