SkylinkHome TB-318 Wireless Stick-on or Wall Mounted Battery Operated Anywhere Wall Light Switch Remote Transmitter Quickly and easily create a 3-way lighting circuit by combining this unit with the SkylinkHome Receivers (i.e. WR-001 Dimmer Wall Switch or the WE-001 On/Off Wall Switch) Requires SkylinkHome Receivers to work. Ideal to function as a 3-way switch. Ideal for use on stairwells, entrace ways, garages and bedrooms. Easy DIY (Do It Yourself) Installation - allows you to add a wall switch anywhere you want without running wires & paying for an eletrician. Regular rocker-style light switch with flat back can be easily mounted anywhere. Long range, up to 500 foot operating range in open area. Long life lithium battery included.