SENSITIVE: The automatic door opener remote control is compact, portable, easy to use, and features responsive control for convenient operation. PORTABLE: This set includes 2 automatic door remote controls with a key clip, allowing you to attach them to a bag or belt for easy carrying and storage. LONG DISTANCE REMOTE CONTROL: The remote control offers an operating range of up to 40 meters. MULTIPURPOSE: Suitable for controlling automatic doors and automatic door systems such as chicken coop doors, warehouse doors, underground garage doors, and similar applications. PREMIUM MATERIALS: Constructed from ABS and zinc alloy materials, this remote control is durable and designed for long-term use. 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) or 1 x CR2032 Button Cell (Not Included) – Random delivery between new and old battery types Purpose: Remote Control for Automatic Door Opener Package Includes: 2 x Remote Controls 1 x Manual