Trendnet TC NT2 Network Tester

HARDWARE Power Requirement: One DC 9V battery Tone Frequency: 600 ~ 800 Hz. Dimensions (appr.): Master Unit: 115 x 68 x 27 mm (4.5 x 2.7 x 1.1 inch) Remote Terminator: 118 x 32 x 27 mm (4.6 x 1.3 x 1.1 inch) Operating Temp: 0° C ~ 45° C (32° F ~ 113° F) Weight (appr.): Master Unit: 113 gram (4 Oz.) (without battery) Remote Terminator: 57 gram (2 Oz.)