This is a set of two and three size Pitaly Tekion Plus heat pads. They were used for about a year. Size 2: 220mm x 220mm Stable power consumption: Equivalent to 8W (for small to medium-sized terrariums) Size 3: 420mm x 220mm Stable power consumption: Equivalent to 15W (for medium to large terrariums) ▶ Surface temperature 48°C ± 5°C (45°C ± 5°C for size 4 only) ▶ Equipped with self-temperature control function ▶ Equipped with overheat prevention device ▶ Uses flame-retardant film