Monthly Archives: September 2015

Linear Serial to Ethernet converter


A serial to Ethernet converter is sometimes referred to as a serial device server, a terminal server or a serial over TCP/IP server, however all these names are simply different names for the same type of device which basically converts serial RS232, RS485 or RS422 data to Ethernet packets and Ethernet packets to serial RS232, RS485 or RS422 data (it is bi-directional). The serial Ethernet converter has it’s own IP address which is why it sometimes is referred to as a server.

The most common and widely used Serial to Ethernet converter is the 1-port serial RS232 to Ethernet converter. This type of converter converts one serial RS232 port to Ethernet packets and Ethernet packets to serial RS232 data.

LIN-AM-SEK Serial to Ethernet Module Kit
The AM-SEK Serial-to-Ethernet Kit provides a standard network TCP/IP connection for Linear’s AM3Plus, AE1000Plus, and AE2000Plus access controllers. The module can be used as an alternative to a traditional telephone modem typically used for remote access to Plus panel controllers.

Linear ACT31B Block Coded 1 Channel Key Ring Remote Control


The Linear ACT-31B 1-Channel Block Coded Key Ring Transmitter is designed for use with Linear’s access control products. The Model ACT-31B 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.
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. Facility codes can be selected to further customize the system. FR Frequency is 318MHz

Dimensions are:
1.25″ W x 2.25″ H x .48″ D