How to use: First, make sure your hot - water system is turned off. Then, install the thermostat according to the instructions. Adjust the temperature between 60°C and 80°C as you need. After installation, turn the system back on. Note: Always turn off the power before installation or adjustment to avoid electric shock. If you're unsure about the installation, it's better to ask a professional. Maintenance advice: Check the thermostat regularly for any signs of damage. Keep it clean and dry. If there are any problems, contact us for further assistance.