Product Advantages: Easy to set up 4 programmable buttons Lowers your carbon emissions Saves you money Technical Specification: Voltage: 230V / 50 Hz Rating: 230V / 3.100W max. Learning code: more than 1 million Remote Frequency: 433.92 MHz Remote range: 20 Metres Code setting: Learning ON/OFF indication: LED Battery Type: L1028 * 1-12V DC Alkaline