I just got my second LIBERTY safe the other day. It has the heater rod in it but think I will put one of the squirley fluoresent bulbs in a can with holes and it will work better, more heat, last forever. I have the gel cans in my other safe. with the blue dot indicators. I will also pick up a couple of humidity indicators for the cabinets. just to be sure.
Tip when moving a gun safe (mine weighs about 800 pounds) use golf balls in tight spots like turns etc. conduit or pvc pipe works but for getting around tight corners use the golf balls, Just put cardboard on wood floors for protection.
If you are thinking of getting a gun safe, decide which one you want then GO ONE OR TWO SIZES LARGER...
AND JOIN THE NRA.....I AM A BENEFACTOR LIFE MEMBER SINCE LATE 70'S