The TEMPO Communications TM-700 telephone buttset helps technicians install, service, and maintain voice services with ease. 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. The TM-700 features over-voltage and over-current detection for safer operation and also features an intercom mode, a built-in toner for pair tracing, and DTMF detection and measurement for enhanced productivity. Use the built-in loudspeaker or with a headset (included) for easy hands-free operation. The Tempo Communications TM-700 makes your job faster, safer, and easier.