• Tone generator:
• Working voltage: DC 9V ±15%
• Working current: 10mA (intermittent tone) / 20mA (continuous tone)
• Output wave form: square wave signals ±10Vpp
• Single audio frequency: ± 900Hz
• Dual audio frequency: ± 900Hz - 1000Hz< BR> Dimensions: 4.5" x 2.4" x 1.1"
• Probe: Working voltage: DC 9V ±15%
• Working current: 25mA (L) / 80mA (max. SP volume) / 100mA (max S&L volume)
• max. reception sensitivity: > 30mV
• • Maximum output volume: ±120dB
• Dimensions: 8.1" x 1.6" x 1.5"

Network tester: consists of a tone generator and a probe
Method: use the tone generator and the probe to determine where a cable is going and whether or not (and where) the cable is interrupted
Signal viewing in 3 modes: lamp (L), speaker (SP) or both (S&L)
Tone generator output (square waveform): single (900Hz) or dual (900 - 1000Hz)
Comes with: soft carrying bag