Brand:No Brand Only Work under the Darkness or Weak Light It is Highly Suggested to Attach to the Wall,Fridge or place Parallel to Human Body. Not suggested to Put Them like Under the Cabinet,not enough space to sense Body but it is OK to do so if You Can Guarantee there are enough space to Sense Human Body The USB on Left and Right Side will Strengthen the Sensitivity when you attach the magnet sticker No need Battery USB Rechargeable for use More Economy and cheaper in a long run Charging Model(if support):USB Charging Style,Cool white Charging time(if support):2 hours