Feature: 1. [WiFi Smart Energy Meter] This is a three phase four wire WIFI smart energy meter with on off switch, used to measure three phase four wire AC active energy and variable parameters. 2. [APP Remote Control] This energy meter has WiFi function and can be remotely read and controlled on off using for TUYA APP. Complies with the requirements of WIFI 802.11b g n. 3. [Versatile Display] Features a backlit display for easy reading, displaying total active energy, positive active energy, active energy, three phase voltage, three phase power, three phase power factor, and three phase frequency. 4. [High Performance] The 3 phase smart energy meter has high stability, high overload capacity, and low power consumption, ensuring stable performance. 5. [DIN Rail Mount] This smart power meter can measure positive and negative active energy using negative energy. Easy installation on 35mm standard DIN rail. Specification: Item Type: WiFi Smart Energy Meter Material: PC flame retardant Model: DTS6619 Frequency: 50 60HZ Rated Current: 3x5(80)A Limit Voltage Range: 85~300V (L~N) Accuracy: Class 1 Starting Current: 40mA (minimum measurable value) Voltage Circuit: <2W 10VA WiFi: 802.11b g n, only supports 2.4GHz network, not compatible with 5GHz network Relay Control: Meter relay signal output, used to control the switch of AC contactor (Note: The meter has two options: relay function and no relay function) Installation: 35mm standard guide rail . Package List: 1 x WiFi Smart Energy Meter 1 x User Manual