120v 60hz
LakeTahoe, it doesn't matter if the plugs are different. We have special plugs for the U.S versions to convert with the Australian ones
You might want to check your signaller to see what hz it uses. Sometime if it uses 50 hz and you plug it in 60 hz, it may not work well due to fequency phase. But if it did work then see how far it can transmit to receiver.
Another option, If you are familiar with house wiring to fusebox, plugging it where closest to fusebox, the better receiver will get signal. Sometime big home (like my house) sometime wired more than 100 ft and signal attunated (reduced) and receiver getting confused signal and it flickers that annoys me.
My wife got a free wireless Sonic Alert (doorbell/telephone transmitter w/ wireless doorbell transmitter). I plugged receiver in our bedroom and wireless doorbell transmitter rigged to door bell chime and sits on top of doorbell chime shell (I didn't care about apperance tho). It works like a charm. My own Doorbell/telephone transmitter (not wireless) which was situated in basment had problem reaching Sonic Boom clock/receiver. It flickers or vibrator pulses randomly. So I unplugged and remove it from service ( on same day when My wife got new wireless doorbell/telephone transmitter) and save it as a backup in case my wife's new wireless doorbell/telephone transmitter fails.
You might want to make sure there are NO surge protector strips or charger w/ surge protector built in plugged in
same socket where receiver plugged into. It can "strip" the signal before reaching trasnsmitter. Laptop charger have built in surge protection and it'll do likewise. So you need to experiment by unplugging surge protectors and see if receiver works normally. If it did then try plugging power surge strip or adapter into socket at different location. Last thing is DONT plug in receiver or transmitter into power surge strip!!! LIke I mentioned recently, it'll strip signal from any signalling devices.
That's how I found out when I plugged my laptop charger on same socket where SA's receiver plugged at same socket. I missed phone calls and doorbell, my kids are my alerter. I decide to plug charger to different location and SA receiver finally work normally.
So hope you can take my advice.
Thanks
Catty