DK-45D1 palm three-phase energy meter anti-tampering device is designed for site operation requirements. It is manufactured using monolithic integration technology. The product is designed with a lot of advantages such as battery poweredsmall sizelight weighteasy to carryhigh accuracyreliable performancewide temperature range and excellent display, etc. Main Features: 1. On-site calibration for single-phase activethree-phase active & reactivethree-phase four-wire active & reactive and energy meter. 2. Use large-screen TFT true color LCD, menu operation, easy and convenient. You can operate this device smoothly without the help of the manual after using several times. 3. Measure and display three-phase voltagecurrentactive poweractive energyphase and power factor. 4. Wire real-time check for three-phase three-wire, judge 48 types of wiring way. 5. Real-time display of current and voltage vector diagram, easy to observe. 6. With pulse output, convenient for repairing. 7. Battery powered, convenient for site operation.