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Linear TRANS PROX Block Coded Key Ring & 125 kHz Proximity Tag, 4-Channel


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WARNING: Cancer and Reproductive Harm –


Works With Most 125 kHz HID Proximity Formats and Card Readers

The Linear TRANS PROX Block Coded Key Ring and 125 kHz Proximity Tag (4-Channel) is a remote keyfob used to control Linear's access control products. It's also compatible with MegaCode receivers, the AM-DPR Proximity Reader, and most 125kHz HID proximity formats and card readers. The transmitter is preprogrammed at the factory in MegaCode format with more than 1,000,000 possible codes, eliminating the possibility of code duplication. For added security, the transmitter features a 10-second timeout to prevent a single transmitter from transmitting continuously.

Besides having a radio transmitter, it also features an HID proximity tag, which will allow you to move the unit within two inches of a compatible 26-bit HID format proximity reader to request access.

  • Works with Linear's access control products and MegaCode receivers
  • Compatible with the AM-DPR reader, most 125kHz HID proximity formats, and card readers
  • More than 1,000,000 possible codes eliminate chance of duplication
  • Adds radio capability to any access controller that can accept the Wiegand input (use WOR)
  • Same facility and ID codes for the transmitter and proximity tag
  • Includes quick-disconnect key ring


  • Transmitter
  • Key Ring
  • Batteries


  • The HID proximity tag is designed to work with the Linear AM-DPR HID reader (sold separately).
  • Other branded 26-bit HID readers may be compatible, but not all have been tested.

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.


  • Manufacturer Part #: ACT-34DH
  • Transmitter Frequency: 318 MHz
  • Transmitter Format: MegaCode
  • Number of Transmitter Codes: 1,000,000 plus ID codes, (15 facility codes)
  • Proximity Format: 125 KHz non-proprietary proximity, 26 bit Wiegand (TRANS PROX only)
  • Accessories: Quick-Disconnect Key Ring
  • Power: (2) 3V 2016-style batteries
  • Dimensions: 1.25(W) x 2.25(H) x 0.5(D) inches (38.1 x 57.15 x 12.7 mm)
  • Warranty: 2 Year