The SkylinkHome TM-318 Snap-On Wireless distant Transmitter pairs with the WE-001 or WR-001 Wall. TM-318 was for unilateral use with the WE-001 and WR-001 ; however, the snap-on distant can also be paired with any SkylinkHome Receivers to expand its capabilities. Easily it onto your SkylinkHome Wall Switch for localised operation or easily snap it out and carry it as a distant to economic policy your lighting at your fingertip. : -LRB- 1 -RRB- CR-2032 long lithium battery. and upgrade your Skylink Wireless HomeControl System by adding the SkylinkNet Internet hub -LRB- Model HU-100 or SkylinkNet Starter Kits SK-150, SK-200, SK-250 -RRB- to economic policy lighting, littlest appliances and home electronics from your Smartphone anywhere in the world with the SkylinkNet App. Lifetime Support, Call : 1-800-304-1187, : support@skylinkhome.com .