Feature 1SENSITIVE: The automatic door opener remote control is small and portable, easy to use, sensitive control and convenient. 2PORTABLE: A set of 2 automatic door remote control, with a key clip, can be hung on a bag or belt, easy to carry and store. 3LONG DISTANCE REMOTE CONTROL: The remote control distance of this electric automatic gate remote is up to 40m. 4MULTIPURPOSE: Remote control automatic doors, automatic door equipment such as chicken coop doors, warehouse doors, underground garage doors, etc. 5PREMIUM MATERIALS: Door remote control is made of ABS and zinc alloy material, which is safe, non toxic and durable.Item Type: Remote ControlsMaterial: ABS, Zinc AlloyChip: HCS301 Rolling CodeFrequency: 433.92MHzEffective Distance: Approx. 40m/131.2ftNumber and Type of Batteries: 1 x 27A Dry Battery (Not Included)Purpose: Remote Control for Automatic Door Opener .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List2 x Remote Controls1 x Manuals