NOYAFA NF-866 Lineman Phone Cable Tester Tracker For Check FSK and DTM Caller ID Display Automatic Detection

Please note:Battery is not included. NF-866 telecommunications check phone pocket integrated circuits can be wall-mounted telephone. This product meets the standards of the People's Republic of China. Allow access to the telephone network. FSK technology and DTMF caller ID, automatic detection. 16 number displays. Dynamic call to save 38 groups. The HOLD function and off-hook host automatically hang up. Track automatically dial, dial ring back. Flash time 1000ms/600ms/300ms/110ms optional. New call indicator. Technical Specifications: (1) Ambient Temperature: -10 to +40 ° C (2) Relative Humidity: 10% ~ 95% (3) Atmospheric Pressure: 86 to 106kPa (4) Environment Noise: ≤ 60dB (A) (5) Ringing Level: ≥ 70dB (A) (6) Transmission index (subscriber line length of 5km): sending loudness rating: ≤ 12dB Receive Loudness Rating Value: 1dB Side Tone Hidden Assessed Value: ≥ 10dB