Electronic remote control for Nikon 4500 problem

[modonlay]

I have a Coolpix 4500. Works flawlessly. I'm doing a lot of close-up work on a tripod and use an AC power supply to work around battery issues. I set the camera shut-off time for the longest time (30 minutes?) and it stays on as it should. I attach the remote to avoid camera shake on long exposures (1/4 sec, 1/8 sec, etc.) However, the electronic remote times out in about 20 seconds, which shuts the camera down too. Anyone know how I can get the remote to stay on?