Linear ACT-21A Keychain Remote Control - 318 MHz (Qty 10)

Single-Channel Key Ring Remote for Linear Access Systems The Linear ACT-21A Remote Control is a 1-channel key ring transmitter engineered for reliable access control with Linear receivers and controllers. Operating on the secure MegaCode format, this compact device offers over 1,000,000 unique codes to ensure virtually no risk of duplication. Its slim design and quick-disconnect key ring make it ideal for everyday use in residential, commercial, and gated community applications. Key Features Secure MegaCode Format - Factory pre-programmed with one of over 1,000,000 unique codes for enhanced security. Wide Compatibility - Works with all Linear access receivers, controllers, and MegaCode-based systems. Quick-Disconnect Key Ring - Convenient keychain design for portability and ease of use. Battery-Powered - Includes two lithium CR1616 batteries with up to a 5-year service life. Transmission Safety - Features a 10-second time-out to prevent accidental system lockout from continuous t