Available sizes 48X96, 96X96, 144X144 mm.   FEATURES 3 Digit display High Accuracy Easy-to-wire, screw-type terminals SPECIFICATIONS  Display  14.2mm (0.56") H, red LED  Sampling time  Abt. 0.1 sec typically  Aux. power source  AC 110V or 220V ± 10%, 50 / 60 Hz  Power Consumption   ≤ AC 5VA  Operating temperature range  0° ~ 60° C  Storage temperature range  -10° ~ 70° C  Max. relative humidity  95%  Dielectric strength (IEC 688)  AC 2KV / 1 minute Input to power terminals  AC 3KV / 1 minute All terminals to case FREQUENCY INPUT MODEL Measuring Range Resolution Input Impedance Accuracy R-4050 A&B 96R-4050 A&B 99.9 Hz 0.1 Hz ≥1MΩ 0.1 Hz R-4050 B 96R-4050 B 999 Hz 1 Hz ≥1MΩ 1 Hz   OPERATING VOLTAGE   R-4050 A Same as aux supply R-4050 B 10-500V   DIMENSIONS (in mm)