EASY INSTALLATION: Tuya compliant. Support automation with other Tuya device. Installs in circuit panel of most homes with clamp-on sensors. Supports Single, Split-Phase 120/240VAC, 3-Phase/4-wire 480Y/277VAC electricity system compatible. ENERGY MONITORING ANYTIME, ANYWHERE: Real-time Voltage, Current, PowerFactor, ActivePower, Frequency measurement. Monitor your home's real power anywhere, anytime to prevent costly repairs, conserve energy, and save costs. Monitor solar metering. VARIOUS ELECTRICAL APPLIANCE MONITORING: Bi-Directional measurement. Comes with 16 50A sensors to accurately monitor your air conditioner, furnace, water heater, washer, dryer, range, etc. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Committed to bringing the best value as affordable possible, the Meter provides everything you need to monitor your entire home's energy usage in real time. See how much electricity your home is using anywhere, anytime. Select the important appliance you want to monitor and connect the 50A sensor to monitor it to understand its power usage. Connect the 300A sensor to the main circuit to monitor your home's total power consumption. Easily understand your household consumption, save electricity bills, and conserve earth resources. Color: As shown Material: plastic Package Contents: 1pcs x electrical energy monitor 3pcs x 300A sensors 16pcs x 50A sensors 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.