• Environment temperature:-30º~50º
• Display that the liquid is the transformer oil.
• The way of working: continuous operation
• Operation time: 5 years at least
• Electrical resource is AC in three phase, Rated voltage is 220V, Rated frequence is 50Hz;
  The maximal switching current≥0.2A:
• Technical data of GYB-AJ type Automatic Alarm Tubular oil level guage is seen by Table 2