Our remote keys include PCB and battery, it is ready to be programmed and it has been tested and all emit signals before shipping. You need to check and confirm this information before you place an order (make sure your OEM key's buttons and shape are the same as ours): This Item Only Work for Below Part number and Model:  FCC ID: WAZSKE13D01 PIc:   662F-SKE13D01 Part number: TKY2-67-5DY Frequency: 315MHz   Chip: ID49 Blade Key:Uncut Compatible with:  For 2017-2020 Mazda CX-5 For 2016-2020 Mazda CX-9 It is an aftermarket key without a logo or part number printed, and this transmitter only work on vehicles equipped with support push start / Keyless entry.   Important Note: 1. If your original key has the same shape and button it will fit. 2.This remote will have to go to a qualified locksmith for programming. 3. You will need to get the blade cut at the local dealer or professional locksmith . Thank you for selecting our service!