... tampering, load control, management of energy consumption and users’ information, etc. The meter is used to measure 50Hz or 60Hz ... in office buildings, shopping malls, residences, airports and metro, etc. Functions and Features ♦Meter casing ABS anti-flaming, with transparent PC window ... electricity.♦LCD 6+2 digits display. (LED and register display optional)♦One meter has one card, the card has re- ...