ST230 Tel Line Tester is a new kind of line fault tester with safety & multi-functions capabilities.
Besides the functions as a Tel Line Tester, it also has functions of high voltage protection,
monitor and telecom line identifying, etc.

Main Functions :
1. Common Telephone: Dial, Talk, Redial, Mute, T/ P switch
2. Fault Testing: Insulation, Break, Grounding
3. Call & Talk
4. Telephone Testing
5. Monitoring

Specifications :
Insulation impedance test, Rang: 0~ 10Mega
Ring distance: