● Common telephone function: Dial, Ring, Talk
● Mute
● T/P switch
● High voltage protection (by fuse)
● Polarity indication by LED
● Volume adjust
● Pause
● Store phone number
● Monitoring function
● Last number redial
● Telecom Line Identifying (Telephone line, ISDN line, ADSL line)
● Dumbbell shape, small size, simple operation
● Special Dumbbell shape design
● Small size
● Easy operation
● Solid new materials for shell
● Waterproof and vibration proof
● Dimension (mm): 232x73x95
● Weight (kg): ≤ 0.5
● Environment temperature: -10℃~55℃
● Relative humidity: 10%~95%
● Environment noise: ≤60dB
● Atmospheric pressure: 86~106Kpa
Application: Used for Tel line tester line man set
After-Sales Service: 1 year warranty
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