Wireless remote

I use the wireless digital remote by Nikon. I am limited by its uses. I can not use it in Bulb Mode. It would be ideal to be able to use it in Bulb Mode while shooting long exposures, mainly at night. I could use the cable release, however I just came across this product.

http://www.gadgetinfinity.com/product.php?productid=16830&cat=285&page=1

Its a wireless remote system that comes with a transmitter and a wireless receiver that attaches to the shutter release port of the camera. Priced at $39.99 its an affordable buy.

Nikon Product
Mc-Dc1 ($14.95) The Mc-Dc2 ($26.99) is compatible with the D90.