![Probably nothing but I'd like some reassurance please. I've not long moved into my place and heard some knocking… full detail in comments. : r/DIYUK Probably nothing but I'd like some reassurance please. I've not long moved into my place and heard some knocking… full detail in comments. : r/DIYUK](https://preview.redd.it/probably-nothing-but-id-like-some-reassurance-please-ive-v0-3kwtccmaz4aa1.jpg?width=640&crop=smart&auto=webp&s=73857a40396b239d515ec48fdcf7430cf706966a)
Probably nothing but I'd like some reassurance please. I've not long moved into my place and heard some knocking… full detail in comments. : r/DIYUK
![Horstmann teleswitch connections | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum Horstmann teleswitch connections | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum](https://electricians.s3.eu-west-1.amazonaws.com/data/attachments/36/36642-92d28fb192870bf33ba2c4f3ae190009.jpg)
Horstmann teleswitch connections | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum
![Horstmann Radio Teleswitch | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum Horstmann Radio Teleswitch | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum](https://electricians.s3.eu-west-1.amazonaws.com/data/attachments/25/25129-7a78f622846a3653163be7179461c3b9.jpg)
Horstmann Radio Teleswitch | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum
![Glyn Hudson on Twitter: "Spotted a Radio Teleswitch in a friends house this evening, this 26yr old box is still working to dynamic control E7 start/end times as an early form of Glyn Hudson on Twitter: "Spotted a Radio Teleswitch in a friends house this evening, this 26yr old box is still working to dynamic control E7 start/end times as an early form of](https://pbs.twimg.com/media/D3Gas7wWAAETmN4.jpg:large)