MPC 4-Door 60lb Shaved Handle Popper Security Alarm with Emergency Release Combo Kit Easy installation: We carefully select products that maximize features and minimize the difficulty of installation. Optional interior push button switches are included for removed interior door handle setups. Kit includes complete detailed installation instructions made by our professional technicians, with U.S. tech support available. Other kits have limited features, complicated wiring and vague instructions with no support. Easy operation: The K9 Classic-EDP Car Alarm features 2 four-button 1-way remotes. Arm, Disarm, pop driver door, and pop passenger all with the press of dedicated buttons. Press 2 buttons together to independently pop the rear passenger doors. Safe: Our kits include a safety relay that automatically prevents your doors from popping while the car is running. Other kits have no safety circuit. Reliable: Our kits have all high-quality components. Exterior waterproof emergency entry button is included in case the battery in your remote dies. We believe they're an important part of a good popper kit. Other kits do not include any emergency entry or sell the button for up to $20 separately. Kit includes: (4) Heavy-duty MPC solenoids (60 lb. max pulling force) with mounting brackets (Solenoid/Bracket Assembly Dimensions: 2.5" x 2.5" x 6"), (4) Chrome spring loaded door pushers, (5) Relays with harnesses, (1) K9 Classic-EDP Car Alarm, (2) 4-button Remote controls, (4) Interior push buttons, (1) Exterior waterproof emergency push button, Braided steel linkage cables and mounting hardware, Installation instructions and wiring diagram.