1. High-definition color screen interface design: the use of large LCD color VA display, bringing a different color visual experience 2. Standard rail slot mounting design: 35mm standard rail mounting, no screws, snap fastening, convenient and easy to install. 3. 6 power failure protection functions: over-temperature protection, over/under voltage protection, over-current protection, over-power protection, voltage imbalance protection, current imbalance protection. 4. One cell phone controls multiple devices at the same time: supports one cell phone to control multiple devices, and also supports multiple cell phones to control one device. 5. Applicable to different scenes: rental housing, family home, companies, hotels, high and low power distribution cabinets, factory assembly lines, warehouses and other fields. Voltage range: AC 85-290V Current range: 0-80A Power range: 0-23KW Timing range: 0-999 hours (WIFI version APP: 365 days) Temperature range: -20~150 Frequency range: 50-60HZ Power factor: 0.00-1.00PF Product size: 86.5 x 74 x 65mm Display size: 55 x 34mm Rail mounting size: 35mm Color: Red Material: plastic Package Contents: 1 * Voltage 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.