• Home
  • Linear MegaCode Visor Transmitter, 5-Channel

Linear MegaCode Visor Transmitter, 5-Channel


Usually ships in 3-5 days.


WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov


MegaCode Format

The MDT-4A 5-Channel Visor Transmitter is designed for use with Linear’s access control products. The MDT-4A is five-channel device. Pressing one of the transmitter’s front buttons sends channel one through four. Pressing the small button on the transmitter’s top sends channel five. The top button can be hidden with the top button cover supplied. Also included are lithium batteries with a five-year service life and a visor clip.

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.

  • Compatible with all Linear access receivers and controllers
  • Superior transmission range
  • Factory programmed MegaCode format supports over 1,000,000 codes
  • Unique "Extra" top button
  • High visibility operate LED
  • Visor clip included

Security Products, Access Control & More By Linear

For more than forty years, Linear LLC has been known as a worldwide provider of radio based transmitters and receivers for the traditional security market. Millions of Linear transmitters have been sold over the years. Linear security products are offered via a worldwide network of distribution. While Linear continues to be a leading supplier of devices for the security market, we have expanded our products to include focused product lines in the Access Control, Remote Control and Garage Door Operator markets.


Technical Details

  • Battery Life: Up to five years
  • Frequency: 318 MHz
  • Number of Codes: 1,000,000+ (MegaCode format)
  • Channels: Five channel
  • Power: Two 3V 2032 type lithium batteries (supplied)
  • Dimensions: 1.6" W x 4.2" H x 0.8" D (41 x 107 x 20 mm)

Models compatible with the MDT-4A

  • AE1000Plus: Commercial Telephone Entry System with Access Control – Four Doors
  • AE2000Plus: Commercial Telephone Entry System with Access Control – Four Doors, Large Screen
  • AKR-1: Exterior Digital Keypad with Radio Receiver
  • AM-RPR: Remote Proximity Receiver
  • AM-RRR: Remote Radio Receiver
  • MDR: 1-Channel Receiver
  • MDR-2: 2-Channel Receiver
  • MDRG: 1-Channel Gate Receiver
  • SMDRG: 1-Channel Gate Receiver
  • WOR: Wiegand Output Receiver