THIS IS VERY USEFUL 1240 C ELECTRICAL MUFFLE KILN WITH A PROGRAMMABLE TEMPERATURE/TIME CONTROLLER AND 42 L SPACIOUS CHAMBER THAT IS ESPECIALLY DESIGNED FOR WORKING WITH ALL TYPES OF MATERIALS ON TEMPERATURES BELOW 1240 C (2264 F). FOR YOUR SAFETY THIS KILN HAVE A SECURE MECHANISM THAT WILL DISCONNECT KILN'S POWER SUPPLY FROM ITS HEATING ELEMENT/S IF DOOR OF THE KILN IS OPEN OR CLOSED NOT PROPERLY. IT HAS ONE 16-MM HOLE WITH A STAINLESS STEEL SHUTTER ON THE DOOR TO SEE FIRING OBJECT/S DURING ALL FIRING PROCESS. THIS KILN HAS ALSO A DIGITAL, OVER/LOW-TEMPERATURE REGULATION SECURE SYSTEM TO HOLD SAME TEMPERATURE DURING THE WHOLE SOAKING PROCESS AND A SMOOTHING CIRCUIT DIGITAL GUARD FOR ACCURATE READING AND STABILITY WORK OF THE TEMPERATURE CONTROLLER ON FLUCTUATIONS OF ELECTRICITY THAT IS VERY IMPORTANT OPTION FOR MOST PROFESSIONAL FIRING PROCESSES.Technical specification:- Brand name: Technical Supermarket;- Manufacturer: Treatment of Surfaces LTD (London);- Model: R-310P-2022;- CE. UKCA and FCC, ISO-9001-2008;- Single phase, 230V+/-10%;- Supplied with no plug: should be connecting directly to a 20 A circuit breaker;- 3400 Watt / 14 A;- No asbestos at all;- Maximum working temperature - 1240 C (2264 F);- Heating time to top temperature - 240 minutes.- Continuously working time on top temperature = 20 mins. Below 1000 C = 24 hours.- Kiln dimensions in MM (inch): H470 x W470 x L560 (19" x 19" x 22");- Useful chamber/inner dimensions in MM (inch): H310 x W310 x L450 (12" x 12" x 18");- Chamber/inner volume: 40 L.;- 32-step (segments) PROGRAMMABLE temperature/time controller that will allow you to pre-set, reach and hold (soak) any required temperature AND time.- - Safety switch mechanism for disconnecting heating element/s from power supply if door is open or closed not properly;- One ventilation hole with stainless steel shutter on the door;- Positions of three heating elements: right, left and on the top;- Digital over/low-temperature regulation secure system;- Smoothing circuit (stability work control) digital guard;- Industrial graded K-thermocouple on right wall of the kiln;- Calibrated. Estimated accuracy of SOAKING temperature: +/- 1 C;- Manufacturer reserve all rights to make changes that improve the performance of this kiln;- Weight - 70 Kg (80Kg on the pallet);- Cable - 5 M.Delivery specification:- This R-310P electric muffle kiln;- Industrial graded K-thermocouple;- Safety switch mechanism (if not installed yet);- Electrical box with a programmable temperature controller and a secure switch (if not installed yet);- Downloadable User Manuals;-