Portable dielectric oil tester technical index: (1) AC220V±10% power supply input (2) Output voltage:AC 0V~100KV (3) Rate of voltage rise: 0.5kv/s±10%, 2kv/s±5%, 3kv/s±5%,5kv/s±5% (4) Max test times: 9 (5) Init wait times:0~999s (6) Stir time: 0~999s (7) Wait time: 0~999s (8) Measurement accuracy: ±(1% of full scale + 2 digits) Resolution:0.1KV (9) Temperature measurement: Measurement range : 0°C to 70°C, or better Temperature resolution : 1°C, or better Operating temperature : up to 45°C (10)Storage:100 groups (11)7 inch colorful LCD with touch pad (12)Oil test vessel temperature measurement unit All the selection can be done by touch panel with color LCD.