Relative humidity

Used but in good working condition, needs new batteries. Specs: Load/No load tester Prospective short circuit current Volt drop test Micro processor controlled Test up to 100A (6kA) circuit breakers 3-Phase system test Designed to SANS 10142 Measuring Loop: 0 ~ 2000? (±2% (0.05 ~ 50?), ± 3% (500?), ±15% (above 500?)) Measuring PSC: 0 ~ 6kA at 230V (L-n) (±12% + 5 Digit) Operating Voltage (V AC): 50 ~275V AC 50 or 60Hz Test Current - Loop/PSC/Load: 12A (Load Voltage shown as at 16A) Resolution (?): 0.01 (Loop) Thermal Protection: Electronic PSC Current: 6kA at 230V AC (L-N) Max ±2% (0.05 ~ 50?), ±3% (500?), ±15% (above 500?) Operating Temperature: -10 DegreesC to 40 DegreesC Humidity: 85% Max Relative Humidity Power Source: 8 x 1.5V AA Alkaline Batteries Certificates: UL, IEC61010-1. Certificate of Conformance What's in the box T1825 Carry Case Strap Leads TAL1825 (P56)