GENERAL SPECIFICATIONS : 1.Sensing : TRMS sensing 2. Jaw Opening : 55mm max. 3.Display : 3-5/6 digits 6000 counts & 3½ digits 1,999 counts for Hz. 4. Update Rate : 5 per second nominal 5. Polarity : Automatic 6. Low Battery : Below approx <2.4V 7. Operating Temperature : 0°C to 40°C 8. Relative Humidity : Maximum 80% R. H. for temperature upto 31oC decreasing linearly to 50% Relative Humidity at 40°C 9.Storage Temperature : -20°C to 60°C, < 80% R.H. (With battery removed) 10. Altitude : Operating below 2000m 11. Temperature Coefficient : nominal 0.15 x (specified accuracy) / °C @(0°C--18°C or 28°C--40°C), or otherwise specified 12. Power supply : Standard 1.5V AA Battery x 2. 13. Power Consumption : Typical 14mA for Current function, & 5.2mA for others. 14. APO Timing : Idle for 34 minutes 15. APO Consumption : 10mA typical