 These Test Sets are made from fiberglass-reinforced ABS to withstand rugged use.
The moisture-resistant case ensures reliable performance under the most demanding weather conditions. A high impedance monitor feature (above 120 KOhms) helps prevent accidental interruption of data flow if accidentally connected to a digital/data circuit. The low-profile design is lightweight, easy to carry and fits comfortably on the shoulder.
Model 610
Battery-powered amplified speaker for both Talk and Monitor modes
Three pre-programmed, one-touch numbers
Repertory memory dialing; 10 memory locations with 23 digits per location
Model 620 & Model 630
Duplex Speakerphone
Filters for safe DSL line connection
Battery-powered amplified speaker for both Talk and Monitor modes
Three pre-programmed, one-touch numbers
Repertory memory dialing; 10 memory locations with 23 digits per location
SIGNALSHIELD - Digital/Data Signal Alarm is featured in the 630 only
Model 4SP
Amplified speaker-to-monitor line activity
Two different levels of user-selectable amplification
UL Standard safety compliant
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