Q: "I have a couple of computers and a cordless phone. Do these ultrasonic repellers have any effect on my electronic devices? Adverse effect? Thanks for your help." Kristina
Answer: What is the hz of the phone? I have a unit on the floor that is on continuously. In this room are two computers plus servers and there is no interference at all.. The frequency range of this unit is 3,000 - 45,000 Hz. I don't know of any phones that are over 900hz but then I am not current with all the phone techology.
Response from Customer: "My phone is a 2.4 GHZ giga range. I don't know if that's the right thing you wanted. How does your unit work for you by the way? I just found a mouse in our house and don't want them. Is it good for that?"
Answer: My son the electrical engineer says that 2.4 gHZ and 3 KHz are far enough away in frequency that there should be no interference. Yes, these work for mice on the rodent setting. There is some "chatter" on the higher settings that can be annoying. But then mice are more annoying than that.
Remember to discourage mice, keep all foodstuffs like dog kibble, etc. in closed mouse-proof containers, seal around pipes and exhausts, install new door seals, etc. A cat works, too!
And if yours is an older home, no matter what you do, you may have mouse visitors in the winter. The Victor Woodstream Electronic Mouse Traps kill the mice quickly and humanely. With the old fashioned snap ones and glue traps, you may be dealing with live mice.
Thanks for your questions.