Tone Dialer (430-0146) Specifications Faxback Doc. # 6227 Power Requirements................................3 AAA Alkaline Batteries Dial Method.............................................Standard Dual-Tone Multi-Frequency (DTMF) Telephone-Connection Type.........................................Acoustic Dimensions............................4-3/16 X 2-5/16 X 13/16 Inches (HWD) Weight.....................................................Approx. 3.1 oz. (including batteries) (CJD/all-7/6/94)