Remote control for home , car alarm system (transponder), combine with key blank for easily use. Product Appearance :Item : Keyless ... opener,rolling shutter etc )Key blank : for different brands of car keyBattery Model : 2016 Voltage : 6V Material: Zinc Alloy + ... all kinds of PCB with different function .For home /car alarm ,such asASK modulate mode remote ,gate opener,car cental system and so on . ...