Example:
"RTC:2017/6/16 7:13 Init:2017/6/16 5:44 UpTime:4744s PWR:PwrVoltage RST:0 GPS:1 SAT:0 TTFF:0 TTLF:0 NOGPS: 1:18 SR:0 FG:200 FL:0 SMS:3 REC:42 MD:1 DB:0"

Response details Description
INIT Device initialization time.
RTC RTC time.
RST Total restarts count.
ERR Error Counter.
SR Number of Sent Records.
BR Number of broken Records.
CF Profile CRC Fail counter
FG Failed GPRS counter.
FL Failed link counter.
UT UPD Timeout counter.
SMS Sent SMS counter.
NOGPS No GPS Timer.
GPS GPS receiver state. 0 – OFF, 1 – restarting, 2 – ON but no fix, 3 – ON and operational, 4 – sleep mode.
SAT Average satellites.
RS Reset Source Identification

1 – Low Power, 2 – W Watchdog, 3 – I Watchdog, 4 – Software reset, 5 – Power On, 6 – Pin Reset.

MD Data Mode state. 0 – Home and Stop, 1 – Home and Moving, 2 – Roaming and Stop, 3 – Roaming and Moving, 4 – Unknown and Stop, 5 – Unknown and Moving.
RF Records Found – number of records in the memory.