Tzonedigital_TT18 V1.4 June9, 2016
4. Indicator status
Green LED - indicating machine status
Off
No boot/into sleep/no GPRS data send when
work
On
Sending GPRS data and the temperature /hu
midity sensor connected
On for 20 seconds and off for 20 seconds
Temperature or humidity over threshold
On for 60 seconds and off for 60 seconds
Low voltage
Red LED - Power
Off
No charge or full charge
On
charging
5. GPRS data format
TT18 GPRS data is in hex format.
The format of hex code:
Format:
Start bits(2byte) + Packet length(2byte) + Protocol number(2byte) +
Hardware type(2byte) + Firmware version(4byte) + IMEI(8byte)
+ RTC data
time(6byte)
+
LBS data length(2byte) + LAC(2byte) + CELLID(2byte) +
MCC(2byte) + MNC(2byte) + Extension bits(A)
+ State data length(2byte) +
Alarm type(1byte) + Terminal information(1byte) + GMS signal strength(1byte)
+GSM state(1byte) +Battery voltage(2byte) + Temperature(2byte) +
humidity(1byte) + Extension bits(B)
+ Extension bits(C) + packet index(2byte) +
CRC(2byte) + Stop bits(2byte)
The data of the device send to the server:
54 5A 00 2F 24 24 04 03 01 07 00 00 08 66 10 40 27 00 34 28 09 01 01 05 03 0D 00 08 25 33 78
37 04 60 00 01 00 09 AA 00 17 37 01 95 09 DA 45 00 0A 57 0A 0D 0A
Below is a table tells more detail information about the protocol.
Data block
Number
Data
Meaning
