Guide Rail Slot Installation: Standard guide rail installation, no screws, mounting, convenient and easy to install. Wide Applications: Suitable for high and low power distribution cabinets, display cabinets and racks, factory assembly lines, corporate warehouses, rental apartments, companies, shopping malls, hotels, family homes, and so on. Name: 8 in one Energy Meter Voltage measurement ranges: 170-270V Current measurement ranges: 0-63A Power measurement ranges: 0-17KW Timing measurement ranges: 0-999Hrs Electricity measurement ranges: 0-9999Kwh Temperature rangeminus: 20-150℃ Frequency measurement ranges: 50-60Hz Power factor: 0.00-1.00PF Type: B: No WIFI, no power-off function Model: KWS-302 Colour: White Material: Plastic Size: 66x66x82mm/2.60x2.60x3.23in Package Contents: 2 x Energy Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.