Feature: ● Mini Size Design ● 20 Meters Distance Control ● Radio Frequency Remote Control ● The Remote Controller only works with LIVOLO Touch Remote Switch, Dimmer switch Product Attributes: Model: VL-RMT-02 Type: Wireless Remote Controller Dimension: 40 x 25 x 15 mm / 1.57 x 0.98 x 0.59 inch ( L x W x H ) Battery:Require 27A / 12V ( Not included ) Radio Frequency: 433.92MHz Remote Distance: 20M Function: Wall Light Switch Remote Control Products Limited: Can only use with Livolo Remote Switch Package Include: 1 x VL-RMT-02 Wall Light Switch RF Mini Remote Controller Note: 1.The Remote Controller only works with LIVOLO Touch Remote Switch 2.Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand. Make sure you don't mind before you bid. 3.Please allow 1-5mm differences due to manual measurement.