Usage Tips:3 pieces Top 432 EV. THSIDNE"s Top Series 433.92Mhz Radio Remote Controls are the control solution for residential and commercial gate automation systems. The unit is supplied with instructions that are easy to program in less than 30 seconds. It is easy to program from an existing remote control or from the command. They are thin, light and rugged in design with long battery life, typically two years. The TOP-432EV Slimline 433Mhz two-channel key fob can provide individual remote control of two TOP series 433Mhz receivers , so you can open a garage door with one button and an electric gate with the other. Compatible with the following 433Mhz models: TOP432M, TOP432S, TOP432EE, TOP432NA, SA. Comes with two CR2016 lithium batteries already installed and programming instructions. Dimensions: 69 x 12 x 32mm. Technical specifications: Number of channels: 2 Frequency: 433.92 MHz Type of code: fixed Range: 50 - 150 m Power supply: 2 x 3 V CR2016 lithium batteries Working temperature: -20 C and 55 C Dimensions: 68 x 32 x 13 mm Weight: 16 gx 32 x 13 mm Weight: 16 g Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.