1[PC INSULATED SHELL] Using excellent PC flame retardant materials, high temperature and impact resistance, safe in operation. 2[DIN RAIL MOUNT] Adopt metal DIN rail installation, with small size and light weight, modular structure for easy maintenance. 3[COPPER GASKET] The gasket is made of copper material, which has good electrical conductivity and stable performance. 4[REMOTE CONTROL] 2.4GHz WIFI frequency, remote control via for Tuya APP, which is convenient and efficient in operation. 5[LCD DISPLAY] The single phase energy meter is a digital LCD display, with low power consumption, easy to observe. Item Type: Digital Energy Meter Product Material: PC + Copper Product Model: OLDB1-63 Rated Voltage: AC 230V Rated Current: 63A Pulse Frequency: 1000imp/kWh Working Temperature: -45~70 Power Consumption: 1W Installation Method: DIN Rail APP: For Tuya WIFI Frequency: 2.4GHz Pole Number: 2P 1 x Smart Energy Meter 4 x Plugs 1. Without switch function. 2. For electricity related maintenance and installation, be sure to ensure that the operators have electrical work qualifications and take necessary power off and insulation protection measures.