# Controlling | MQTT HUB | LinkedGo ST1820 - Shelly Smart Thermostat **URL:** \ **Category:** Devices\ **Created:** [October 4, 2025, 6:12pm UTC](https://community.homey.app/t/controlling-mqtt-hub-linkedgo-st1820-shelly-smart-thermostat/143759 "2025-10-04T18:12:41Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Tjar](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/tjar/32/61177_2.png) [@Tjar](https://community.homey.app/u/Tjar)\ **Post date:** [October 4, 2025, 6:12pm UTC](https://community.homey.app/t/controlling-mqtt-hub-linkedgo-st1820-shelly-smart-thermostat/143759/1 "2025-10-04T18:12:41Z")
Dear readers, I’m trying to control the LinkedGo ST1820 thernostat using MQTT (enable/disable, target temperature). I tried several topics and payloads but I just cant get it to work. Has anyone used this or does anyone know where to find this info? Shelly is very limited (or I just dont understand how they document). I can read all info through MQTT. Best regards, ---
**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\ **Post date:** [October 4, 2025, 10:55pm UTC](https://community.homey.app/t/controlling-mqtt-hub-linkedgo-st1820-shelly-smart-thermostat/143759/2 "2025-10-04T22:55:48Z")
Try this one? ![Screenshot_20251005_005455_Chrome](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/e/ee88bf773b27be04d7b8a170bb4e1aea160e89de.jpeg) ---
**Author:** ![Tjar](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/tjar/32/61177_2.png) [@Tjar](https://community.homey.app/u/Tjar)\ **Post date:** [October 5, 2025, 6:06am UTC](https://community.homey.app/t/controlling-mqtt-hub-linkedgo-st1820-shelly-smart-thermostat/143759/3 "2025-10-05T06:06:44Z")
Seems logical, but I didnt manage to change the target temperature with your example. I also tried the topic /command/rpc best regards