https://shop.simplemining.net/ssrv2.html?___SID=U
https://bitcointalk.org/index.php?topic=1695298.0
You need to create a file on the rig:
/hive-config/watchdog_srrv2.txt
ENABLE=1
# Device serial number
SERIAL_NUMBER=1234
# The slot where this rig is connected, 1-8
SLOT_NUMBER=1
# Extension board serial if you have one
EB_SERIAL=
After reboot please turn off windows client as it will send pings also.