We have experienced repeated faults with our Banham's home security system that relate to the BT Mobile Network being temporarily unavailable. This causes a signal failure, which Banhams states is due to GPRS interference. ChatGPT states this can be due to several reasons, including:
1. The root cause is often local RF interference
Banham’s GPRS communicators can drop signal when:
A nearby router, access point, or mesh node is broadcasting strongly on 2.4 GHz channels 1, 6, or 11
A cordless phone, baby monitor, or smart-home hub is too close to the panel
A neighbour installs a new Wi-Fi mesh system (very common)
2. Start with a controlled Wi-Fi test
I recommended:
Temporarily turning off your home Wi-Fi and mesh nodes for 5 minutes
Watching whether Banham signal strength immediately improves
This helps confirm whether interference is internal (your own devices) or external.
3. Physically reposition the GPRS unit
Even a small change helps:
Move it 15–30 cm away from the router or Wi-Fi devices
Avoid being flush against walls with steel studs or heavy electrical wiring
Keep it away from smart meters if possible
4. Ask Banham for a network rescan + SIM refresh
I advised contacting Banham to:
Request a full signal rescan
Ask them to refresh or reprovision the SIM
Confirm whether your unit is using Vodafone or O2, and switch if needed
Banham can also check if your postcode has had mast changes.
5. If the issue keeps recurring, replace with dual-path IP/GPRS
I noted that:
The older single-path GPRS communicators are fragile
Banham can upgrade the panel to a dual-path alarm signaling unit (IP + cellular)
This eliminates most intermittent GPRS issues.
Have other customers experienced this issue and what did they do to resolve it?
