Fluke Networks Test set features DTMF digit grabbing that isolates faulty customer premise equipment. Set has voltage indication/measurement that identifies potential line problems with data indication which warns when data is present on the line. Display type: Extra-large, backlit LCD screen. Two-way, hands-free speakerphone. Current range: 10 - 100 mA. AC impedance: Off-hook: 600 O nominal 300 - 3400 Hz, on-hook: greater-than120 kO, 300 - 3400 Hz, headset impedance: 32 ohm. Pulsing rate: 10 pps +/- 1 pps, Break/make ratio: 60/40, Interdigit interval: greater-than300 ms, Resistance during break: greater-than100 kOhm. Tone frequency error: +/- 1. 5% maximum, Tone level: -3 dBm combined (typical), High versus low tone difference: 2 dB +/- 2 dB. Memory capacity: 9 speed dial memories of 23 digits, plus one last number redial memory, PBX pause duration:-user programmable, default of 4 seconds, hook flash duration:user programmable, default of 500 ms. Voltage range: 4 - 140 VDC. Current range: 0 - 100 mA. TDR range: 3000', Accuracy: +/-2 m, +/- 5 %. Frequencies: Steady tone: 950 Hz, Alternating tones: 950 Hz and 1480 Hz. Battery type: 9 V alkaline battery. Dimensions: 8. 3" x 3. 2" x 2. 6". Detects dial tone, places and receives calls, polarity. Certifications and standards: ANSI/ISA 82. 02. 01 (61010-1) 2004, CAN/ CSA-C22. 2 No. 61010-1-04, UL 61010-1 (2004) and IEC 61010-1:2010. Data indication warns when data is present on the line, voltage indication/measurement identifies potential line problems, caller-ID with call waiting verifies functional service, DTMF digit grabbing isolates faulty customer premise equipment. Fluke Networks Test set is perfect for voice/data/video and communication service provider technicians and features caller ID with call waiting CID that verifies functional service.