Feature: 1. SENSITIVE: The automatic door opener remote control is small and portable, easy to use, with responsive control operation. 2. PORTABLE: Set of 2 automatic door remotes, each with a key clip for convenient attachment to bags or belts, making them easy to carry and store. 3. LONG DISTANCE REMOTE CONTROL: Offers a remote operating distance of up to 40 meters. 4. MULTIPURPOSE: Suitable for controlling automatic doors and related equipment, such as chicken coop doors, warehouse doors, and underground garage doors. 5. PREMIUM MATERIALS: Constructed from ABS and zinc alloy materials for durability and safety. Specification: 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: 1 x 27A Dry Battery (Not Included) Purpose: Remote Control for Automatic Door Opener Package List: 2 x Remote Controls 1 x Manual