DSL compatible in both Monitor and Talk modes, the TM-700’s LCD screen makes reading polarity, voltage, current, and ringing frequencies easier than ever, and clearly shows speed dials and recent numbers for faster access. Learn More
TM-500I offers the convenience of line powered (no battery needed) operation and useful features like a high impedance monitor that is data and DSL safe, polarity test, speed dial, last number dialled and pulse dialling. Learn More
TM-500 offers the convenience of line powered (no battery needed) operation and useful features like a high impedance monitor that is data and DSL safe, polarity test, speed dial, last number dialled and pulse dialling. Learn More