HUMM UKU WiFi 2" x 1" x 4" Digital On - Off, Time, Temperature Controller Black Finish For Sauna HeaterUKU Wi Fi lets you to operate all the features of the UKU control from the convenience of your smartphone. Regulate your lighting, ventilation, timer, and temperature either with the wall mounted control or use the HUUM Wi Fi app from anywhere so that your sauna is preheated to the perfect temperature when you arrive. For added safety, the UKU Wi Fi includes a door sensor, overheating protection, and child safety lock. UKU Wi Fi requires a Wi Fi