1. Durable alloy case, built-in silicone rubber coat, and stainless steel contactor that

brings shock-resist, anti-erosion, and waterproof, capable in a harsh environment.

2. Enhanced battery performance.

3. Won''t lose data when power out.

4. Large and extensible storage capacity.

5. Automatic alarm when low power or storage full.

6. Applicable to all-weather, the designed service life of 15 years.

7. Special design to prevent repeated reading