LINE ELECTRICAL |
Maximum
Loop Length |
5k ohm |
Minimum
Loop Current |
10mA |
Maximum
Off-hook Resistance |
300 ohm |
Minimum
DC Resistance in Idle, Monitor and Lockout |
10M ohm at 300
VDC |
Minimum
AC Impedance in Monitor |
400k ohm at 1
kHz |
Line
High-DC Lockout Range |
120 VDC
minimum 450 VDC maximum |
DIAL
SIGNALING |
Pulse
(rotary) Dial Pulse Rate Break
Proportion Break Interval Resistance
Inter-digital Interval |
10 pulse per
second 60% 1M ohm 800µs |
Dual-tone Multifrequency (DTMF)
Level |
-3 dBm
nominal |
Flash
(Time-break Recall) Duration |
600µs
nominal |
Speed
Dial Capacity Stored Numbers Stored
Number Length |
10 32 digits
per storage # |
Programmed Pause Duration |
4 seconds per key
press |
BATTERY
OPERATION |
9 VDC
Alkaline Battery Operating Life |
3 months of typical
use 30 hours of continuous loudspeaking |
Auto
Battery Saver (with warning tone) Power Off
When No Line DC Power Off With Line
DC |
90 seconds 20
minutes |
ENVIRONMENT |
Operating Temperature |
-24°C to
60°C -29°F to 140°F |
Storage
Temperature |
-50°C to 75°
C -58°F to 167°F |
Dust and
Water resistance |
IP67 per IEC
60529 |
Physical
Shock |
TRY-TSY-000344
Bellcore |