![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)
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
![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
![Ed Byard on Twitter: "Can anyone help me? My parents have been refused a smart meter as it is "incompatible" with their meter box setup. Ancient radio teleswitch aside (which is probably defunct) surely they just need to remove it and replace the meter ... Ed Byard on Twitter: "Can anyone help me? My parents have been refused a smart meter as it is "incompatible" with their meter box setup. Ancient radio teleswitch aside (which is probably defunct) surely they just need to remove it and replace the meter ...](https://pbs.twimg.com/media/Fbpo8_hWQAA5Cp-.jpg)
Ed Byard on Twitter: "Can anyone help me? My parents have been refused a smart meter as it is "incompatible" with their meter box setup. Ancient radio teleswitch aside (which is probably defunct) surely they just need to remove it and replace the meter ...
![Domestic consumer electrical supply connected to PME system and analogue electric meter indicating how much electric / energy has been consumed Stock Photo - Alamy Domestic consumer electrical supply connected to PME system and analogue electric meter indicating how much electric / energy has been consumed Stock Photo - Alamy](https://c8.alamy.com/comp/2J03AYD/domestic-consumer-electrical-supply-connected-to-pme-system-and-analogue-electric-meter-indicating-how-much-electric-energy-has-been-consumed-2J03AYD.jpg)
Domestic consumer electrical supply connected to PME system and analogue electric meter indicating how much electric / energy has been consumed Stock Photo - Alamy
![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)