Features: Experience seamlessly control with the 420-450mhz 2 Channel Wireless Remote Switcher featuring a Double channel receiver for efficient management of garage door, shutters, lights, and pumps. Equipped with advanced FSK frequency hopping technology, this remote Switches ensures interferences resistance operating even when multiple devices used simultaneously. For homeowners and enthusiasts for reliabled and energy efficient solution for remote control of household and outdoor electrical systems. Perfectly suited for various applications such as home lighting, electric curtains, outdoor decorations, advertising signs, aquarium pumps, and ventilation equipment. This remote Switches offers easy wiring and programming capabilities for customized convenience. Specifications: Remote Size:about 141x53.5x43.6mm/5.55x2.11x1.72in Voltages Option: DC12-36V/ AC220V Component:ABS Remote Frequency:420-450mhz(frequency-hopping) Remote Need: 2x1.5V Battery(Not included) Note: 1cm=10mm=0.39inch Due to problem of lighting effect, there might be certain tolerances in product, please understand. Please allow 0-1cm error due to manual measurement. Package includes: 1Set 2 Channel Remote