Its really sad.I tried to make the sensor work I bought from them thru Amazon for 4 months.
It would sporadically send alerts for large items (trucks) but the sensor direction/location never was straight in front of the device. Sundays Seconds agreed to refund, but did not specify a deadline. It took me a couple months to finally give up on it, and they are now refusing to fulfill that promise and were beyond rude on the phone.
BEWARE THIS IS NOT A SELLER TO DO BUSINESS WITH!!
I sent them back the defective unit, but they failed to refund my money or replace the unit.I recommend you think carefully before doing business with them.