# ​MASTER-SLAVE.REFERENCE

Specifies the time when slaves receive the trigger ON and trigger OFF signal from the master.

## Actions

SET/GET Property

## Arguments

Name | Type | Range | Meaning
--- | --- | --- | ---
reference |  | [0-1] | 0: The master-slave group is triggered after any trigger delay expiration. 1: The master-slave group is triggered as soon as the trigger is recognized​.

## Platforms

​Fixed-mount readers, except DM80-USB

## Notes

Version: 6.1.13