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Linear ACT-21A 1-Channel Mini Transmitter
The Model ACT-21A 1-Channel Key Ring Transmitter is designed for use with Linear’s access control products. The Model ACT-21A is a single-channel device supplied with a quick-disconnect key ring. Also included are lithium batteries with a five-year service life. A unique 10-second time-out feature prevents the system from being shut down by a single transmitter transmitting continuously. The transmitter is MegaCode format, which means each transmitter is factory preprogrammed with one of over 1,000,000 codes, virtually eliminating the possibility of code duplication. Because the receiver ”learns” each specific code, no unauthorized person can gain access to the system by reprogramming a transmitter.
| Standard Features | • One-Button • Compatible with all Linear MegaCode Format Access Receivers and Controllers • Supplied with quick-disconnect key ring • Factory programmed MegaCode format supports over 1,000,000 codes • Two type 1616 lithium batteries supplied • 5-Year Battery Service Life • Superior Transmission Range |
| Power | Two 3V Type 1616 Lithium Batteries (Supplied) |
| Buttons | One Button |
| Frequency | 318MHz |
| Channel | One |
| Codes | 1 Million Plus Codes (factory precoded) |
| Dimensions | 1.25"W x 2.25"H x .48"D |
| Warranty | 1-Year |
Radio Remotes
Radio remotes come in standard size or key fob style. Both types offer single or multiple buttons that can open more than one gate or door. When ordering your wireless transmitter and receiver you have an opportunity to use one device to operate your gate and garage door. You may want to order a receiver and transmitter made by the same manufacturer as your garage door opener to consolidate the number of remotes you own.
Coded radio remotes are remotes that contain a unique code (similar to a card reader code). This type of remote offers a higher level of security. Individual transmitters can be added or deleted from the system. If a transmitter is lost, it can quickly be deleted to help maintain security.
