Caller ID System 250 (430-0956) Specifications Faxback Doc. # 7124 Power..................................................9V Alkaline Battery 2.5 to 8 Milliamps Ringer Equivalency Number (REN).......................................0.1B Effective Impedance of 1.0 REN....................................8000 ohm Effective Impedance of 0.5 REN...................................16000 ohm Facility Interface Code (FIC)...................................Loop Start Service Order Code (SOC)..............................................RJ11 Memory Capacity...................................................85 Calls Dimensions............................3 5/16 x 3 5/8 x 1 7/16 Inches (HWD) Weight................................................................5 oz Operating Parameters The following information is supplied to help you answer questions from your phone company. Interface.......................................................Loop Start Ringer.............................................Standard Bridged Ringer 20-60 Hz Sine or Square Wave 40-130 Volts Ring Signal Resistance..........................6 Megohm (On Hook), 300 Ohm (Off Hook) Specifications are typical, individual units might vary. Specifications are subject to change without notice. Optional Accessory: AC Adapter (Cat. No. 273-1670 or Express Order No. 11265360 available through CMC).........................................9 V, 200 mA (br/ir-03/29/95)