This Linear compatible ACT-34DH 4-Channel Block Coded transmitter is designed for use with Linear’s access control products. The Model ACT-34DH is a four-channel device supplied with lithium batteries with a five-year service life. The ACT-34DH also features a built-in proximity chip for use on HID 125 KHz and compatible card readers. 

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 unauthorised person can gain access to the system by reprogramming a transmitter.

Block coded transmitters are factory programmed to a sequential series of transmitter ID codes. When used with a Linear access controller, transmitters can be locally or remotely programmed into memory by entering the first and last codes of the block into the system. 

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