The RTS-W is a pushbutton timer with wireless communication ONLY with the  ECO-Touch ^IAQ  The timer activates your Fresh Air Appliances to operate at the highest speed for 20, 40 or 60 minutes. Following the completion, it returns the appliance to predetermined setting preferences on the ECO-Touch ^IAQ controller. It is designed to fit in a single-gang box. Comes with a Decora® plate and mounting hardware. No communication wire is needed. Ideal for retrofit applications. Wireless communication to ECO-Touch ^IAQ (only) can range up to 50 feet (15.2m), when free from any signal interference. This timer can only be paired to a Fantech Fresh Air Appliance via the ECO-Touch ^IAQ wall control prior to mounting the timer onto the wall in its final location. Follow pairing steps outlined in the Installation and Owner’s manual. Replacement battery type: CR2450, 3V.