Door Bell

[Gregory]

I have been given KAMBROOK Wireless 12 V A27Battery Door bell transmitter and 240 Volt Receiver 50Hz 2W
The Range of the door bell is only 3M I have replaced the Battery in the transmitter but with no change .
How Can I increase the signal range as the power point for the receiver is 10 M away from the front door.

 

[Sceadwian]

You could try doubling the length of the antenna.

 

[MikeMl]

Try moving either the transmitting antenna or the receiving antenna a few inches. Due to multipath, you could be in a null. Moving either ~ 1/4 wavelength might fix it.

There may be some interference on the channel. I recently went through this with a similar wireless system which transmits on 433MHz. The neighbor has a burgular alarm base unit which transmits continuously, blocking my device.

 

[Gregory]

I have the device in the same room looking at each other and the signal is not there at the distance mentioned.
I will post attachment for you to help me with this project.
The aerial on the receiver is that the copper loop at the end .
Do I have to cut this to increase the aerial length and join the loop together.
Where is the aerial on the transmitter.
Thank you for your Help