The whole thing has been a bigger job than I thought, make sure you know exactly what’s going on with your existing wiring and controller. https://www.tsmart.co.uk/ says that this option is "coming soon". You may need to change the element as well as the thermostat, but right at the moment you cant do anything except get your existing set up sorted by someone competent. T-Smart (Tsmart) Hot Water Cylinder Thermostat (head only – does not include immersion heater element) TIHTS

id":"78b52a5fd8e10db1","type":"tab","label":"Discovery","disabled":false,"info":""},{"id":"34c90cb5.cb36f4","type":"inject","z":"78b52a5fd8e10db1","name":"","props":[{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":"","topic":"","payload":"[\"0x01\",\"0x00\",\"0x00\",\"0x54\"]","payloadType":"bin","x":110,"y":60,"wires":[["f5e46a5f51ae1547"]]},{"id":"ea88865c.157778","type":"debug","z":"78b52a5fd8e10db1","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":310,"y":160,"wires":[]},{"id":"a43fe2e7.5bc02","type":"udp in","z":"78b52a5fd8e10db1","name":"listener","iface":"","port":"1337","multicast":"false","group":"","datatype":"buffer","x":110,"y":160,"wires":[["ea88865c.157778"]]},{"id":"f5e46a5f51ae1547","type":"udp out","z":"78b52a5fd8e10db1","name":"","addr":"255.255.255.255","iface":"","port":"1337","ipv":"udp4","outport":"","base64":false,"multicast":"broad","x":380,"y":60,"wires":[]}] The t-smart performs the same function as the existing timer, so you’ll need to make sure you can bypass it either through re-wiring or by some kind of manual override mode (mine didn’t have this so had to rewire).Copy (or link) the custom_components/t_smart/ directory from this repository into your configuration/custom_components/ directory. Built in programmers, planners and timers provides unlimited time and temperature settings via the T-Smart app giving the homeowner complete flexibility and control I thought Amanda’s instructions were excellent - just enough information for a Home Assistant novice such as myself to get it set up. Until that time, if the thermostat is being bypassed, as Happy B says above, do not use it. You and your family are in danger. Yes absolutely. I never notuces those spade connectors and the video that I watched swerved the very mention of them!

Tesla T-Smart (Tsmart) Hot Water Cylinder Thermostat + 14″ Titanium 1 3/4″ Immersion Heater TIHTS572 T-Smart is the most radical evolution of technology in the immersion sector for some time. The T-Smart is the future of hot water heating and is the first generation smart immersion of its kind in the UK. We believe T-Smart will be for hot water what Nest and Hive have become for central heating, providing the homeowner with full smart control of the cylinder. This upgrade will give the home owner complete control remotely over their hot water when its needed via the app The Tesla thermostat is designed to replace thermostats that connect to the heater with two spade connectors.

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This repository provides a custom component for enabling a Tesla T-Smart immersion heater thermostat to be used with Home Assistant. This polls every minute and gets current temp, setpoint, mode and updates a HA Sensor. It fires HA events if it receives unexpected responses or no response within a threshold. This sends the correct commands to the tsmart based on a HA input_select value then sends a control read message 5 seconds later so that the HA sensor updates. The Built-in anti legionella function gives additional piece of mind that the system will be continuously protected from bacteria growth carrying out the antibacterial cycle at least once every 15 days The Tesla system is deisgned for immersions that are horizontally set into the tank (as found in unvented cylinders, like the Megaflo). Is your immersion horizontally set in to the tank? Dont bother looking, the answer is NO.