Description Product Reviews Tempo TM500 Butt Set Glow in the Dark DSL Ready PDF Data Sheet In the evolving world of telecommunications, the TEMPO Tele-Mate Telephone Test Set is an easy to use, DSL Compatible Telephone Test Set designed to help technicians install, service and maintain voice service with ease. Able to tackle the complexities of todays analogue tele-communication lines, the 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 dialed and pulse dialing, making a technician more productive. The TM-500 not only works in handset mode, but can be used with the headset (included) for easy hands-free operation. The TM-500 is safe to operate with over-voltage and current detection. Can be used safely on a DSL enabled line High Impedance monitor for monitoring line without disrupting existing traffic Tone and pulse dialing for versatility on old and new phone lines Luminescent (glow-in-the-dark) keypad Can be used safely on a DSL enabled line High Impedance Monitor for monitoring line without disrupting existing traffic Over voltage and over current protection Tone and Pulse dialing for versatility on old and new phone lines Polarity test with LED indicator 32 digit last number redial and pause 10 number speed dial Adjustable volume control plus mute Pause Flash to generate a timed break recall Line powered, no battery needed Headset (included) for hands free operation RJ11 socket 0 Reviews Hide Reviews Product Reviews