WAIT!!!! Forget about Hot Lap and Intercomp (never seen one of those).... big boxes. You need to step into the future with an Ultra-Lap
. These are new and small. You can mount them on your steering wheel. Hot lap timer beacons do not effect them so you need to buy one with the beacon.
This thing has the computer hook-ups, Temp, track name input, and more. The display measures 3 3/8", 1 7/8" tall, 5/8" thick. Big display numbers too. Plus it gives you a blink if you are faster than last lap. it also stores 2000 laps (Hot lap only 60 laps!)
This is the way to go.
The Hot Laps are nice but they have been out too long without any updates.
Now there is a better choice.
www.ultralaptimers.com EDIT and disclaimer: We liked them so much I became a West Coast dealer. These things are great!
Best of all they are complete for $239 with receiver and beacon (less than a complete Hot Lap system) or $279 for receiver/beacon/computer cable.