The best thing you will ever do for your fish room or home aquarium. We use them in our fish room to control our lights, water change drain and fill pumps, fans, and more. Your devices can be controlled by Google Assistant or Alexa from anywhere in the world. Go on vacation and control your aquariums from anywhere. Replace those pesky timers that have to be reset after power outages. Use a pump to change your aquarium water by voice. Have a pump in a bucket that pumps water through a hose outside or to a drain. Have tanks in multiple rooms of the house? No problem, buy one for each aquarium and if you have multiple aquariums in one room, use a power strip to link them all to save money. We have 70+ tanks and each one is set up to have the lights come on at the same time and go off at the same tiime. Set routines so that things happen on their on. Requires Wi-Fi at the location to work.