Vktech&reg; DC12V 2 Channel RF Wireless Remote Control Learning Code 315MHz 433MHz (433MHz) Working voltage: DC12V(27A/12V battery x1, Included) Output Voltage: AC and DC optional Emission Distance: 20-50m (Open area) The working temperature: -10C to 50C, Transmission rate: 50-60 KHz Uses: Family, shopping malls anti-theft alarm system, electric vehicles, automotive, motorcycle alar