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    The TS22 Test Set’s unique built-in one-way amplified speaker provides three audio levels for hands-free listening and use with automated voice response systems. Multiple memories enable storage of nine 18-digit telephone numbers in a repertory dialer (speed dialing) for easy access to test boards, the central office, and other frequently called numbers. The last number redial feature eliminates the need to re-key your last entry. The TS22 Test Set offers an unbeatable combination of reliability, durability, and expanded utility.

    The TS22A Test Set is equipped with all the features of the TS22 Test Set with the addition of a built-in two-way speakerphone. The two-way speakerphone enables the user to operate hands-free. The effect of ambient noise can be eliminated with the Mute switch, allowing the technician to monitor a line uninterrupted while in Talk mode. A standard among field professionals, the TS22A model is a reliable and durable test set that is ready for any job.

    * The TS22 Series Test Set contains an embedded 3-volt lithium battery.  The 9-volt battery in the Test Set should be changed when low, or once a year if not in use, to prevent the 3-volt battery from draining.  A 3-volt battery that drains after its 42-month warranty will need to be replaced by an authorized service facility at a charge to you.

    * Note also that your speakerphone will no longer work when your 9-volt battery is low or dead.  You should replace the 9-volt battery whenever it is low.

Electrical 
Loop Limit2 kΩ maximum at 48 VDC (nominal 20 mA minimum loop current)
  
DC Resistance
(Talk Mode)
300 Ω typical
  
Monitor Impedance 
TS225 kΩ nominal at 1 kHz
  
TS22A120 kΩ nominal at 1 kHz
  
  
Rotary Dial Output 
Pulsing Rate10 pps ±5 pps
  
Percent Break61 % ± 2 %
  
Interdigit Interval1000 ms typical
  
Leakage During Break>50 kΩ
  
DTMF Output 
Tone±1% maximum
  
Frequency Error Tone Level-3 dBm combined (typical)
  
High versus Low Tone Difference4 dB maximum
  
Monitor Amplifier9 V battery; provides 25 hours
  
Power Sourcecontinuous use, typical
  
Speaker Levels for TS22Low, medium, high and off
  
Automatic Power Shut OffAfter 5 min. of no audio signal
  
Speakerphone Levels TS22ALow, medium, high and off
  
Power SourceShared line and battery power
  
Physical 
Physical Measurement10.25 in x 2.69 in x 3.38 in (26 cm x 6.83 cm x 8.57 cm)
  
Weight 
TS2221 ounces (.595 kg)
  
TS22A22 ounces (.624 kg) typical
  
Environmental 
Temperature Operating:29 °F to 140 °F (-34 °C to 60 °C)
  
Storage-40 °F to 150 °F (-40°C to 66 °C)
  
AltitudeTo 10,000 feet (3,000 meters)
  
Relative Humidity5 % to 95 %

* The TS22 Series Test Set contains an embedded 3-volt lithium battery. The 9-volt battery in the Test Set should be changed when low, or once a year if not in use, to prevent the 3-volt battery from draining. A 3-volt battery that drains after its 42-month warranty will need to be replaced by an authorized service facility at a charge to you.
* The TS22 Series Test Set contains an embedded 3-volt lithium battery. The 9-volt battery in the Test Set should be changed when low, or once a year if not in use, to prevent the 3-volt battery from draining. A 3-volt battery that drains after its 42-month warranty will need to be replaced by an authorized service facility at a charge to you.
* Note also that your speakerphone will no longer work when your 9-volt battery is low or dead. You should replace the 9-volt battery whenever it is low.

22800004TS22 test set with 346A plug 
22800009TS22 test set with ABN
22801001TS22A test set with piercing pin clips
22801004TS22A test set with 346A plug
22801009TS22A test set with ABN