| Test Set Features | Lil' Buttie | Lil' Buttie PRO | Lil' Buttie Ranger |
| DigiView(TM) Displays DTMF received in Monitor | No | No | Yes |
| Trafix Guard low & high line voltage connect inhibit | No | No | Yes |
| DSL Filters prevents loading of DSL lines | No | No | Yes |
| DataAlert low Line Voltage connect inhibit | No | Yes | No |
| LCD display with current, voltage, number dialed | No | Yes | Yes |
| Scrolling Recall review list of stored numbers | No | Yes | Yes |
| Alpha Recall attach name tags to stored numbers | No | No | Yes |
| Caller ID both on-hook and call waiting | No | Yes | Yes |
| Over Current Protected displays value & disconnects | No | Yes | Yes |
| Amplified monitor speaker | No | No | Yes |
| Insta-Talk push to talk (PTT) feature when speaker is on | No | No | Yes |
| Amplified Monitor Earpiece | Yes | Yes | Yes |
| Remaining Battery Indication | No | Yes | Yes |
| Low Battery Indication | Yes | Yes | Yes |
| Tone and Pulse Operation | Yes | Yes | Yes |
| Last Number Redial | 32 digits | 19 digits | 24 digits |
| Recall Memory | None | 5 x 19 digits | 8 x 24 digits |
| Continuous Line Polarity Indication | Yes | Yes | Yes |
| PBX Pause Button | Yes | Yes | Yes |
| Mute Switch | Yes | Yes | Tap-to-Lock |
| 2.5mm Cell Phone Headset Jack | Yes | Yes | Yes |
| Compact Over-the-Ear Headset | Yes | Yes | Yes |
| High Impedance Monitor | Yes | Yes | Yes |
| Storage Pouch | Optional | Optional | Yes |
| Angled Pearcing Clip Lead Set | Yes | Yes | No |
| Angled Bed-of-Nails Lead Set | Optional | Optional | Yes |
| Spring-loaded AT&T style belt clip, field replaceable | Optional | Optional | Optional |
+44 1943 465918
