Installed on the indoor wall. Temperature range: +5/+40 degrees Celsius. Designed for space heating automatic control systems. Indicator light illuminates when heating is active. Meets safety, energy saving, and comfort requirements. Voltage: 220-240VAC 50/60Hz. Load current: 16A. Power consumption: Less than 2VA. Temperature setting range: 5-40°C. External sensor: B=3950 10K @ 25°C. Wire length: 3 meters. Switch differential: ±1°C. Ambient temperature: -5 to 50°C. Protective cover: IP20. Casing material: Flame retardant PC. External dimensions (height/width/depth): 86/86/35mm. Features a temperature scale, dial, and switch on the panel. Designed for simple operation and long-term reliability, suitable for use by children and the elderly. Color: Black. Material: Plastic. Package contents: 1 x Room temperature regulator. Package includes only the items listed; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3cm.