Flex TT603 User manual
External Door
Sensor Installation
Guide
Solar Powered Trailer
and Asset Tracker
2
EXTERNAL DOOR SENSOR INSTALLATION GUIDE
Pre-Installation
Please refer to the Getting Started Guide to understand basic device
functionality and comprehensive device installation instructions.
Recommended Tools and Supplies
Tools
»Electric Drill
»Digital Multi Meter (DMM)
»Wire Strippers
»Crimping Tool
»7mm Nut Driver Bit
»¾” Step Drill Bit
Supplies
»Drill and drill bit:
»3/32 or 2mm drill bit for pre-drilling for
sheet metal
screws (pre-drilling optional)
»5/32 or 4mm drill bit when using
included bolts
»Weatherproof silicone such as GE Silicone II (clear)
or Loctite207 (clear) with at least -40°C to 85”C
(-40°F to 185°F) temperature range
»Cable Zip-Ties
»Isopropyl Alcohol
»Clean rag
»4 sheet metal screws or 4 bolts and nuts or 4 rivets
(not included)
Mounting the Solar Powered Trailer
and Asset Tracker
The recommended mounting location for the TT603 is high on the
nose of the trailer, away from the corner, and just below the top
rail with the GPS antenna pointing up. Install the device per the
instructions included in the box for the TT603.
Connecting 12/24 Volt Power
»Power Connection Cable
Unscrew the protective cover from the din cable connection on the
TT603 and connect the Power cable. Make sure to seat the din cable
securely in the TT603 and screw it in completely. Making sure not to
bend in sharp angles, route the cable away from the TT603 towards
the trailer power. Secure the cable with metal cable clamps.
»Power Connection
You will need to connect the TT603 cable to the trailer power through
TT603’s Pink (6-24VDC In) and Black (Ground) wires.Wire the red
wire with the corresponding power joint and black wire with the
corresponding ground joint from the trailer.
Door Sensor Mounting
Mount the part with the magnet inside the trailer on the primary
door and the other one with wire on the ceiling of the trailer using
appropriate hardware.
Wiring Door Sensors to TT603
The final step to complete the installation of your TT603 is the
connection of the door sensor wires. It is important that you secure
the wires with cable zip-ties making sure to keep away from any
moving parts.
Enabling external door sensing
Email the list of Serial Numbers for the devices you are
installing to support@flex-iat.zendesk.com to enable external
door sensing on the units.
Part with wire
Part with magnet
3
EXTERNAL DOOR SENSOR INSTALLATION GUIDE
With the wires along with the mounting pad on the ceiling of the
trailer combine Yellow and Black wires and then connect either one
wire (no polarity on 2 wires) to the TT603’s Pink (RS232 Rx) wire and
the other wire to the TT603’s Purple (12 VDC out) wire through the
following steps.
1. Strip 2 wires jacket to 7mm.
2. Insert the whole stripped wire into splice and crimp it with
tools (suggest using Crimp Hand Fixer KY-8161 as following
image shows).
3. Insert crimped splice into heat tube as follows.
4. Do the same for the TT603’s Pink (RS232-Rx) wire (Refer to Figure 1).
5. Move the heat tube to cover the whole splice.
6. Heat the tube using a blower or lighter until the tube is shrunk,
suggested temperature is about 350 °C (662 °F).
7. Repeat the above steps for combining the other wire and
connecting them to the TT603’s Purple (12 VDC out)
wire. (Refer to Figure 1).
Copyright © 2019, Flex. All rights reserved.
ENG-DSS-1-001-00 V1.0
