I hot glue the probe directly to the RHP casing so only about an inch of cord separates the probe and where it's fixed. Then 2 holes above to zip tie down the probe and the RHP cord. I used a cord grommet (http://t.homedepot.com/p/The-Hillman...1305/202242505) for the exit hole. Is it for a terrestrial or arboreal animal?