4vwinDIY Driveway Alarm Receiver for Wireless Driveway Alert System

The receiver arrived promptly and in good condition, it was a late night purchase and I didn't realise ir came without a sender unit.I thought no problem I'll just order this necessary part. Unfortunately it doesn't seem possible to order the sender on its own.I repacked it and returned it through the post office at no cost ,which is a great Amazon service, for what was initially my mistake.The moral of the story is ..... Look before you le.........ap.

So useful when you cannot see your front door from inside the house, as it gives a audible signal whenever anyone approaches the house enabling you time to oinitor who it is