![220V 240V Relay, Briidea On/Off Switch Electric Heating Relay with Built-in 24V Transformer, Replacement for Any Relay, Compatible with 24V Thermostat - - Amazon.com 220V 240V Relay, Briidea On/Off Switch Electric Heating Relay with Built-in 24V Transformer, Replacement for Any Relay, Compatible with 24V Thermostat - - Amazon.com](https://m.media-amazon.com/images/I/61Z9WTqnopL._AC_UF894,1000_QL80_.jpg)
220V 240V Relay, Briidea On/Off Switch Electric Heating Relay with Built-in 24V Transformer, Replacement for Any Relay, Compatible with 24V Thermostat - - Amazon.com
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Thermostat Controller with Relay using LM35 and TL431 | Electronic schematics, Relay, Heating systems
![diagram - Wiring thermostat (Rittal 31100) as a 24 V temperature switch - Electrical Engineering Stack Exchange diagram - Wiring thermostat (Rittal 31100) as a 24 V temperature switch - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/Nn1S3.png)