# Grove 4-Digit_Display node README

* ```msg.payload.message``` is used as the payload of the published 4 digits string. 
* ```msg.payload.colon``` is used as the payload of the published centered colon enabled as value of 1 and disenabled as value of 0. 
* ```msg.payload.clear``` used as the payload for turned off the display. 
    * Check <a href="http://wiki.seeedstudio.com/Grove-4-Digit_Display/" target="_blank">Grove-4-Digit_Display Wiki page</a> when you would like to know the detail of available strings.