LINEAR ACT-21B MINI TRANSMITTER
Linear ACT-21B Mini Remote Control TransmitterTechnical: Linear Moore-o-Matic MegaCode format 1-button mini key chain size 2 by 1 transmitter for garage door openers. Factory programmed MegaCode format supports over 1,000,000 codes. Block coded. Compatibility: Works with ALL Linear MegaCode System products. Smart coding system, no dip switches, 318 MHz frequency. Includes: 1 Linear ACT-21B Mini Remote Control Transmitter, 3 volt lithium button cell batteries (5 year life), quick-disconnect key ring and programming instructions.
Replacement Linear Part Features:
- 2 Model 1616 Lithium batteries
- 1,000,000+ factory precoded codes
- Dimensions: 2.25 x 1.25
- Snap-action keychain