• The LT Express (battery preinstalled).
• A cable set with self-piercing bent nose clips and a bed of nails.
• A headset that can be worn over either ear.
• An optional belt-clip kit.
• A users’ manual.
Apparent Line Resistance:
275
Ω
at 20 mA
Battery Life:
For a typical 9-VDC,
450-mAhr alkaline battery:
Operating: 18 hours minimum,
225 hours maximum;
Standby: 3.4 years;
Typical: 30 to 50 hours
Flash Duration:
600 ±50 ms
Line-Current Range:
15 to 120 mA
Measurement:
Voltage: 0 to 128 VDC ±5%;
Current: 10 to 140 mA ±5%;
Do
not
attach unit to electric-
power lines
Memory:
Battery-backed-up
memory stores (5) programmed
phone numbers (up to 19 digits
each) plus last number for redial;
battery will typically maintain
stored numbers in an unused unit
for over 2 years
MONITOR-Mode Impedance:
Greater than 130 k
Ω
Pulse Dialing:
Pulse rate: 10 pps ±10%;
Make/break ratio:
60% to 40% ±2%;
Interdigit interval: 820 ms;
Resistance during break: 120 k
Ω
Pulse Duration:
Tone: 3 seconds;
Pulse: 3.4 seconds
Return Loss:
14 dB at 600
Ω
Ringer Equivalence:
In BELL mode:
0.0 (no ringer load)
Tone Dialing:
DTMF output into 600
Ω
:
Tone-frequency error: ±1.5%;
Tone level:
High group: -6 ±2 dBm;
Low group: -8 ±2 dBm;
High vs. low difference:
2 ±1 dBm
User Controls:
(1) Left-side-mounted TALK/
BELL/MON slide switch for
operating mode;
(1) Right-side-mounted
microphone-mute pushbutton
(must be held down);
(4) Front-mounted pushbuttons
(Flsh, Tone, Pau, Rcl) for
various options;
(1) Standard front-mounted
12-key phone keypad
Interface:
Telephone system:
Modular telco;
Headset: 2.5-mm cell-phone type
Connectors:
To telephone network:
RJ-12 (“6-wire RJ-11”) F;
To headset: 2.5-mm cell-phone
headset jack
Indicators:
(1) Front-mounted 2-line
x 16-character reflective super-
twisted liquid crystal display
(LCD) panel
Temperature Tolerance:
Operating:
32 to 122°F (0 to 50°C);
Storage:
-4 to +140°F (-20 to +60°C)
Humidity Tolerance:
10 to 90%
noncondensing
Altitude (Maximum):
10,000 ft.
(3048 m)
Enclosure:
High-strength ABS plastic
Power:
From 9-VDC alkaline battery,
typical:
BELL mode (timed out): 15 µA;
TALK mode:
CWCID OFF: 2 mA;
CWCID ON: 12 mA;
MONITOR mode: 25 mA
Size:
Excluding lanyard (top hook):
7.3"H x 2.5"W x 1.7"D
(18.5 x 6.4 x 4.3 cm)
Weight:
With cable set: 0.6 lb.
(0.3 kg)
The complete package
Specifications
Ordering Information
ITEM
CODE
LT Express......................................................................TS147A
Cable Set with Bed of Nails and
Belt Clip (Spare) ..........................................................TS148
You might also need:
RJ-11 (4-Wire) Modular Cable, 4-ft. (1.2-m) ......EL04M-04
It’s easy to attach the cable set, even with the optional belt clip.
And replacing the battery is a snap, too!
Installing the
cable set
Installing the cable set
and belt clip
Replacing the
battery
2
