... clock options (internal and picking-up) For Datacom:V.24/RS232/V.28, V.35, V.36, X.21, RS-449, RS-485, RS422 ... insertion: None, AIS, PatterlessDatacom Technical(1) Data interface type: V.24, V.35, V.36, X.21, RS-449, RS-485, EIA-530 ... ×48mmWeight:0.95kgAmbient parametersOperation temperature: -10~+50°CStorage Temperature: -30~+70°C Humidity: 5%~90%, non-condensing SAT-1CS E1 Datacom Tester ...