User's Guide

STEPS TODO TIPS
1
• Download+Install+Open GPT App
• Search "GPT" at the Play Store (Android) or Apple Store
(Apple).
• For each function page of GPT App, tap on the help "?" button
for instructions.
• On the GPT App homepage, tap on the "DEMO" button to
practice various functions.
2
• Turn on the receiver, connect
with the cell phone/tablet via
Wi-Fi
• The Wi-Fi password is "Gpxxxxxxxx" and 8 digits are the
receiver's identity code displayed on the receiver.
3
• Turn on the transmitter and
check the battery level on the
App
• Select team members you want
to track in
Monitoring
page>>Select member page
on
the App.
• The battery needs to be charged or replaced if the power level
is less than 40%.
• When crossing time zones, GPS positioning may take several
minutes.
• Charging is completely unaffected by wind and waves: The
GPT designed holder for wireless mat is specially designed on
a rolling boat in big waves.
4
• Team members carry the
transmitters.
• Receiver/repeater placed on the
higher location on the ship/shore
• Onboard/shore teammates use
App to fulfil safety monitoring
task for all members throughout
whole activity.
Enjoy diving and go home safely!
• The GPT devices are radio transmitters that need to be kept
above the water to be effective.
• It is recommended to attach the transmitter to the shoulder
area of BCD. As long as the diver keeps floating upward, the
transmitter can be easily maintained above water.
• Start the transmitter before the activity, and shut it down at
the end, there is no need to do any operation if no distress
occurred.
2. Initial Setup
3. Function and technical specification
Technical Specification-TX mode only
Function
• GPT-T1 is a transmitter of GPT system carried by personnel, especially for seafarers
and divers, for safety monitoring by remote real-time tracking + precautionary
danger alerts.
• It is the lightest transmitter for divers on the market, weighing only 65 grams
(including battery).
RF modulation LoRa
RF frequency 920.5~924.5 MHz
Transmission power 19.5 dBm EIRP
Duty cycle
Within 2 hours after start, 1 emission per 10 sec. and 0.3 seconds for each emission;
After that, send 3 consecutive data every 3 min.
Transmission distance 80 km (LoS)
Working Temperature -20
°
C ~60
°
C
Battery CR123A lithium Battery, 1400 mAh x 1
Battery endurance TX mode: 52 h
Housing IP Resistant to > 150m underwater pressure
Dimensions (L x W x H)
30x100x27 mm