Where Do You Daisy-Chain OSDP Readers?

One of OSDP's improvements over Wiegand is the ability to Daisy-Chain multiple readers together and then connect those readers to one reader/OSDP input port on the controller. See our OSDP Access Control Guide for more.

You can often connect 2 - 8 readers together using OSDP versus only 1 for each port using Wiegand. Here's an image to show the concept:

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****** *** ********** ****-**/****-*** ************, **** other ************ *** *****-******** *******?

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******* ** ***** ******* *** * high/low ******* **** ******* *********** ***** be ****** *** *****-******** ***:

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*** ****'* ******* ****** *********** ***** two *******. ****** ***** **** ***** three ** ****?

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