The Module we supply can also be used where there is no cell phone coverage but a landline is available. You will need to purchase a Visual Telephone Call Alert With Flashing Light similar to this which is available on Amazon and which we have tested

We found it was better to remove the red lenz and to connect the LDR directly to the LED. This particular item is only suitable for the UK but similar item are available in most countries.                                            THIS SITE DOES NOT COLLECT COOKIES