Specifications: 1) Meter function: time-sharing meter energy, 2 rates, 8 time periods 2) Double meters respectively record the accumulative power consumption of two rates 3) Infrared communication function, use palmtop computer for meter setting and reading 4) Pulse output: electric energy pulse output function, used for checking meter and collecting power consumption Inner packing: Dimensions: 170 x 125 x 114mm Weight: 2,000g