5 minutes ago, PeterJames said:

There are several hard wired systems that provide free software with notifications. Bear in mind though none of them including Ring are 100% reliable. My doorbell occasionally forgets to let my phone know there is someone at the door even when Im on the same WiFi, it activates my home assistant everytime though  

Dahua bells even for DIY are better than most, have the SD card on monitor side option 

Hkc have a doorbell coming in the next 8 years

From an installation engineering perspective, what happened on that street is becoming standard practice with organized vehicle theft gangs. The vulnerability isn't a glitch—it is an architectural flaw inherent to cloud-dependent 2.4GHz battery doorbells.

1. The 2.4GHz RF Jamming Reality
Consumer Wi-Fi cameras (Ring, Blink, Nest, Eufy battery) rely exclusively on 2.4GHz 802.11b/g/n radio links to push video chunks to AWS or Google cloud servers. Handheld multi-band jammers (or even basic £10 ESP8266 deauth boards blasting 802.11 deauthentication frames) flood the 2.4GHz spectrum with noise. Because battery doorbells have no continuous local storage or hardwired failover, the moment the radio link is broken, they cannot handshake with the home router, no clip is written, and no cloud push notification can be sent until the criminal has already driven away.

2. The Hardwired PoE Architecture (100% Jammer-Immune)
Copper differential signaling over solid copper Cat5e/Cat6 is completely immune to airborne RF jamming. The proper trade installation for a front door entry is a dedicated PoE video intercom (such as the Hikvision DS-KV8113-WME1 or DS-KD8003-IME1 modular unit, or Dahua VTO2202F-P):
- Power and data run down a single internal Cat6 cable back to a PoE switch.
- The intercom stream is recorded 24/7 as an IP channel directly onto a local NVR (Hikvision AcuSense or Dahua) fitted with surveillance-grade WD Purple hard drives.
- Even if a thief stands on the doorstep holding an active military-spec RF jammer that wipes out all domestic Wi-Fi and mobile signals, the camera continues writing uncompressed 25fps video locally without dropping a single frame.

3. Grade 2/3 Intruder Alarm RF Jamming Detection
If you want proactive early warning before anyone reaches the door, a professional Grade 2 or 3 wireless panel (like Pyronix Enforcer with high-security jamming detection or Ajax Hub 2 Plus) actively monitors background noise on 868MHz. When broadband RF jamming is detected, the hub instantly identifies the anomaly, raises an internal alarm, and transmits a jamming tamper alert over the secondary hardwired ethernet or dual-SIM cellular channel.

Relying on Wi-Fi cloud doorbells for vehicle or perimeter security is giving car thieves an open invitation. Hardwired PoE to local NVR storage is the only standard that stands up in the real world.