Features: Remotely lock and unlock your car. Raise window output with LED indication light. With trunk release button. Remote car parking location finding. Flashing alert. Electric lock and air lock option. ACC test, auto lock & unlock your car. Universal, suitable for almost all car types. Specifications: Type: Keyless Entry System Main Unit Input Voltage: D.C 12V ± 2V Working Current: 0.8mA Main Unit Frequency: appr. 433.92MHz Package Size: 13*9.5*6.5cm Package: 1 x Main Unit 2 x Remote Control 1 x LED Indication Light 1 x Connecting Wire 1 x English User Manual Dear buyers, due to customs limitation, keys of the kit can not contain any battery. Please prepare batteries yourselves. Battery model: CR2016 Each key needs 2 pcs batteries, so one whole kit needs 4 pcs batteries.