| TS54 TDR | TS53 PRO | TS23 PRO |
TDR opens/shorts to 3,000 ft/1,000 m | • | | |
Built-in toner w/5 different tones | • | | |
Patented SmartTone®for exact pair identification | • | | |
Caller-ID w/ Call Waiting verification | • | • | |
Extra-large LCD (Liquid Crystal Display) | • | • | |
Extra-large LCD (Liquid Crystal Display) | • | • | |
Backlit LCD with glow-in-the-dark keypad | • | • | |
DTMF Digit Grabbing | • | • | |
Headset compatible | • | • | • |
Extended range high-impedance DataSafe™ operation | • | • | • |
High-impedance DataSafe operation in monitor mode | • | • | • |
Data lockout protection and override | • | • | |
DSL/POTS Filtering technology | • | • | • |
Voltage and current digital readout | • | • | |
Voltage and current indicator | • | • | • |
Over-voltage protection and over-current protection | • | • | • |
One-way amplified speaker for hands-free monitoring | • | • | • |
Audible ringer for callbacks | • | • | • |
Weatherproof – IP64 | • | • | • |
Meets Bellcore specifications | • | • | • |
Polarity indication/tone and pulse operation | • | • | • |
PBX pause button | • | • | • |
Visual ANAC (Automatic Number Announcement Circuit) mode option. Not available in all regions | • | • | |
3-year Warranty | • | • | • |