GAI-Tronics 227-001 Auto-dial Telephones - Manual (Page 16)

Pub. 42004-338F
Model 227-001, 247-001, 257-001, and 277-001 Industrial Auto-dial Telephones Page 16 of 19
f:\standard ioms - current release\42004 instr. manuals\42004-338f.doc
06/12
Specifications
Electrical (Typical)
Auto-dialer ....................................... Maximum 31 digits, with internal 12-button pad, field-programmable
Frequency response .............................................................................................................. 300 to 3,000 Hz
Inter-digit pause .................................................................................................................................. 100 ms
Minimum loop current ........................................................................................................................ 20 mA
Signaling tone (DTMF) ................................................................................................ 100 ms tone duration
Supervisory dc current ................................................................ Minimum 20 mA dc; maximum 60 mA dc
Supervisory dc voltage ................................................................ 24 V dc to 60 V dc (not polarity sensitive)
Network interface .......................................................................................................................... Loop Start
Network signaling ............................................................................................................................... DTMF
Auxiliary output (isolated solid state switch) ................................................................. 48 V dc @ 125 mA
28 V
RMS
ac @ 80 mA
RMS
Environmental
Operating temperature ........................................................................ −40º F to +140º F (−40º C to +60º C)
Humidity ...................................................................................................................... 90% non-condensing
Mechanical
Model 227-001
Construction
Enclosure ...................................................... Thick-walled cast aluminum with protective gray coating
Panel ........................................................................................................ 0.125-inch brushed aluminum
Finish ................................................................................................................... Gray polyurethane enamel
Handset/cord ...................................................................... “G” style with armored cord and volume switch
Front panel ...................................................................................... 0.125-inch brushed anodized aluminum
Hookswitch ............................................................... Chrome-plated zinc, Stationary switching mechanism
Models 247-001 and 257-001
Enclosure ........................................................................................ High-impact, glass-reinforced polyester
Handset cord .....................“G” style handset/Hytrel
® 6-foot extended length (standard) and volume switch
Connections........................................................................................... 6.5-foot (1.98 m) modular line cord
Dimensions, Outside .................. Model 247-001 ....... 8.0 W
 9.5 H  6.9 D inches (204  242  174 mm)
Model 257-001 ..... 9.4 W  13.2 H  7.4 D inches (239  344  188 mm)
Mounting ...................................................................................................... Four 0.280-inch diameter holes
Weight ........................................ Model 247-001 ................................................................ 6.0 lbs. (2.70 kg)
Model 257-001 ................................................................ 8.2 lbs. (3.72 kg)