| ELECTRICAL POWER SOURCE RELATIONSHIP | OPERATING |
| ENCLOSURE FEATURE | SINGLE ITEM W/HOUSING |
| ACCESSORY COMPONENT QUANTITY | 1 |
| AC VOLTAGE RATING | 18.0 VOLTS MINIMUM AND 96.0 VOLTS MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| DIAMETER | 1.250 INCHES NOMINAL |
| FREQUENCY RATING | 1000.0 HERTZ NOMINAL LOCATION NOT OTHERWISE SPECIFIED |
| FSC APPLICATION DATA | TEST SET,ELECT. EQUIP. |
| MAJOR COMPONENTS | INSIDE MODEL: 12 IN. CORD TERMINAL WITH PLUG AND OUTSIDE MODEL: 60 IN. TWO LEAD CORD TERMINATED WITH TEST CLIPS |
| SUPPLEMENTARY FEATURES | TALK IMPEDANCE: LESS THAN 300 OHMS NOMINAL; TONE FREQUENCY ERROR PLUS OR MINUS 1 PERCENT MAXIMUM |
| TEST TYPE FOR WHICH DESIGNED | TROUBLESHOOTING AND INSTALLATION APPLICATIONS |