So a while back i bought 2 new baby monitors.. both have 1 base and 2 listening devices.

1 base is in DD1's room the other in DD2's we have 2 listening devices in our room (opposite sides) and 1 each in the lounge and kitchen.

During the day the listening devices are turned OFF and when i remember i turn the bases off in the girls rooms.

Yesterday in the kitchen i heard a bit of a crackle noise, the lights flicked on the listening device then it went back to normal.. no issue!

Last night i got to bed turned DD1's on and there is a screaching noise.. hmm damn it so i go to put the listening device on for DD2's room, seems ok til i move and then all static coming through it.

So i switch channels on DD1's to listen to DD2's no screaching noise, try the same with DD2's but still a screaching noise coming from DD1's room?
Put them BOTH back to listen to DD2's room they seem ok so i turn off 1 and just leave hers on.. DP wakes me up at 3am.. DD2's crying but it's not coming through???

Now i'm in the kitchen, getting slight static listening into DD2's room and every now and then there is like a click or a small noise but nothing else.. waiting for her to wake to see if it's working properly... what is going on?

Surely they BOTH wouldn't die or play up at exactly the same time... maybe my house is haunted????
There are no new electrical devices, nothing has been moved in their rooms or mine, i just can't explain it?