1822D is a 16A wired thermostat exclusively for electric underfloor heating systems without WiFi function, delivering stable offline constant temperature control with lower malfunction risks. Its 16A high load capacity is compatible with most electric heating cables and heating films for home use. Equipped with high-precision NTC sensor, it accurately tracks ambient temperature and automatically switches heating on and off to maintain target values. The clear digital display shows real-time and preset temperature, paired with simple touch keys for timing setup and child lock to prevent accidental misoperation. Multiple safety mechanisms including overheat cut-off and short-circuit protection safeguard heating equipment and household safety. Standard 86-type wall-mounted structure allows quick installation, and sturdy anti-scratch ABS panel fits various interior styles. Eliminating wireless modules greatly reduces production cost, making it ideal for apartments, hotels and residential projects without remote control needs. With consistent temperature control accuracy and affordable factory wholesale price, it is a cost-effective heating accessory for global hardware and heating distributors.