devices st901, st902, st901m sinotrack autoleaders

good day first I want to tell you that traccar is definitely a great platform I have two questions for who can help me.

• I have three device references st901, st902, st901m these devices work correctly in traccar after a while they are disconnected and do not reconnect to the platform, if I place them by sms if you send me the coordinates where they are, this is It must or why it happens, so I want to ask if there is a way to send them some command so that when the disconnection happens they come back and get hooked to traccar.
• how many devices can I manage with a server to traccar what is the maximum allowed

There is no limit on number of devices. You can have as many as your hardware can handle.

@Leonairo Chantre, send the RCONF command via SMS and paste here what the tracker is responding to you

Do you have them configured with the SLEEP command? See here:
https://www.forocoches.com/foro/showthread.php?t=5926074

ST-901,ID:9170779195,UP:0000,U1:,U2:,U3:,MODE:GPRS,DAILY:OFF,POWER ALARM:OFF,ACCSMS:OFF,ACCCALL:OFF,GEO FENCE:OFF,OVER SPEED:OFF,VOICE:ON,SH
AKE ALARM:OFF,SLEEP:OFF,APN:lte.avantel.com.co,,,IP:63.142.251.183:5013,GPRS UPLOAD TIME 1:20,GPRS UPLOAD TIME 2:20,TIME ZONE:00

Edit your previous post to hide ID and IP !!!!

Configure sleep mode with command:
SLEEP9999 2
(9999 your password, 2 minutes)