1SENSITIVE: The automatic door opener remote control is small and portable, easy to use, with responsive control for convenient operation. 2PORTABLE: This set includes 2 automatic door remote controls, each equipped with a key clip for attachment to a bag or belt, making them easy to carry and store. 3LONG DISTANCE REMOTE CONTROL: The remote control offers an operating range of up to 40 meters. 4MULTIPURPOSE: Suitable for remote control of automatic doors and compatible with various automatic door systems, including chicken coop doors, warehouse doors, and underground garage doors. 5PREMIUM MATERIALS: Constructed from ABS and zinc alloy materials, the remote control is durable and designed for reliable performance. Item Type: Remote Controls Material: ABS, Zinc Alloy Chip: HCS301 Rolling Code Frequency: 433.92MHz Effective Distance: Approx. 40m/131.2ft Number and Type of Batteries: New Type: 1 x 27A Dry Battery (Not Included); Old Type: 1 x CR2032 Button Cell (Not Included) (New and Old Type Random Delivery) Purpose: Remote Control for Automatic Door Opener Package Includes: 2 x Remote Controls, 1 x Manual