Behmor 1600 Cheap Temperature Mod

One thing Behmor lacks is temperature reading.
This mod version is cheap, easy and quick.

Assuming you have the proper tools/drills:
Thermometer + Thermocouple + PG7 = $10

You will need:

1. Thermodetector Meter + Thermocouple Probe (this is really cheap!)
2. Drill
3. 12½ mm drill bit (31/64") 
4. Smaller drill bit, about 6 mm (1/4") 
5. Screwdriver (small)
6. Torque screwdriver (also small)
7. PG7 Metal Cable Gland

To do:

1. Remove the left (see p.11) and right side panels.3 screws on top, 3 on the bottom (middle one is usually a torque screw)
2. Remove the 4 screws holding the back end of the top panel. 
3. Remove the 3 screws on the inside of the door, holding the top panel .
4. On the rightmost side of the top panel (inside the right side), there's a bent flap locking the top piece. Straighten it out and then pull the top piece out towards you.
   
   Now you have removed all necessary panels for the actual work to begin.
5. Remove the two pins (to minimize hostages while drilling)
6. Mark where the whole should be. Mine is close to the left pin, to be a centered as possible.
7. Start drilling!
   Start with the smaller drill, don't apply too much pressure, you'll get through anyways.
   Then use the big drill to complete the task. 
8. Insert the PG7, use hand pressure to tighten the nut on the inside.
9. Carefully slide the thermocouple probe through the air opening in the back (see picture)
10. Put the thermocouple probe down the PG7 until it protrudes from the inside.
11. Assemble all panels in reverse order.

Pictures

That's it. 

Notable is that I only had a 10mm drill bit but I used a round file to widen the whole to 12½ mm.

I still made it work.