JINING, Shandong, China – May 17, 2026 TWJ, a national high-tech integrated manufacturer specializing in PCBA boards, HVAC controls and EV chargers, officially launches the PDT1-8333 Ascent programmable thermostat, a cost-effective controller tailored for electric and hydronic underfloor heating systems across 39 Eurasian markets including EU 27 nations, UK, Switzerland, Norway, Iceland, Russia, Belarus, Turkey and five Central Asian countries.
Manufactured in-house on our 11 JUKI automatic SMT lines, this 230VAC thermostat fully complies with BS7971 and EN 60364 EU wiring standards. It adopts a slim 14mm 86×86mm standard European wall design, compatible with 35mm deep back boxes for simple residential and commercial installation.
Core Product Highlights
1.High Load & Accurate Temperature Control Rated 16A maximum current with 3680W output, compatible with both electric and water underfloor heating. Equipped with 10K 1% precision NTC sensor, delivering ±1°C temperature accuracy. Three sensor modes (internal / external floor probe / dual sensors) avoid floor overheating risks.
2.Flexible Weekly Energy-Saving Schedules Supports 5+2 / 6+1 weekly programming, with six adjustable time segments per day for wake-up, away and sleep modes. Built-in holiday mode further cuts idle heating consumption, fully meeting EU ErP low-power requirements with standby power below 1W.
3.Multi-Layer Safety Protection Integrated anti-freeze low-temp startup and overheat forced shutdown functions. Sensor fault alert (Err/E1/E2 codes) automatically cuts heating output to prevent hazards. All-pole disconnect design meets EU electrical safety specifications.
4.User-Friendly Operation & Memory Retention Clear backlit LCD with two brightness modes (auto-off after 10s / always on). Dual child lock modes lock single power key or all buttons to prevent misoperation. Non-volatile memory retains all schedules and parameters after power outages.
Installer-Adjustable Advanced Parameters Hidden professional setting menu allows free calibration: temperature compensation (-9℃ ~ +9℃), heating hysteresis (1℃~5℃), temperature upper limit (5℃~99℃) and power recovery logic, adapting to villas, apartments and heating renovation projects.
Strict Factory Quality Assurance
Every unit undergoes 72-hour full-load aging, high-low temperature cycling and insulation testing in our dedicated reliability lab before shipment. Stable working range: 5°C–45°C with IP20 indoor protection rating.
Call to Action
Submit an online inquiry to request free PDT1-8333 samples, detailed quotations and tailored OEM cooperation plans.
