Features: * brand new and high quality * Made of high quality material, durable and practical to use * Automatically identify and display the type, model and related parameter information of the connected device. * Display large-screen multi-function LCD liquid crystal display, display the running data and working status of connected devices in real time in digital, graphic and text form. * Six navigation function buttons, intuitive, convenient and fast * It can complete the real-time data monitoring, remote load switch, device parameters, charging control parameters, load control parameters data browsing and modification operations of the connected controller. * Load working mode setting can be made through the meter head: manual, pure light control, light control + delay, timing. * Real-time display and voice alarm for connected device fault information. * Based on RS485 communication bus, communication distance is longer. Specification: * Backlight And Audible Alarm