For the 2.4G Wireless Controlled Bulb,Each customer should at least purchase 1 Remote controller.The remote controller can be paired up to 4 group of bulbs,You can make the purchase based on your own requirments.If you want more than 1 bulb and just want 1 remote controller,you can simply select 1 remote controller for 1 order and select none for the rest orders in a shopping cart.