Identify POTS dial tone with most economical butt set.
Key Features
- Tone and pulse dialing
- Microphone mute
- Last number redial --- 32 Digits
- Continuous line polarity indication (TALK or MONITOR)
- Electronic ringer
- Amplified line monitor for volume levels comparable to "off hook""operation
- Low battery indicator
- Headset jack
- Battery-powered monitor mode with auto power off on dead lines or when disconnected