Specifications: Working voltage: 220V-245V Output power: 3-9KW Current: 4.5-13.7A Light output: Max.60W Mode: 8+4 mode; normal heating Temperature range: 40-105 C Overheat protection: support Package size: 24*26*7cm Package Weight: 1.5kg Package contents: 1 x sauna external control Feature: High-tech chipboard, excellent external controller for the sauna heater. Energy-saving design, 2 working modes to choose from. Overheat protection for safe use. Can control the light of the sauna room, adjust heating temperature and time, etc. Heat-resistant temperature sensor with a length of 3 m. Compatible with sauna heater 3-9KW. Suitable for home sauna room, commercial occasions. Details on the function of the external controller: 1. Sauna lamp control: To control the switching on and off of max. 60 W lamps in the sauna lamp. 2. Two working modes: Mode A: 8 + 4 operating hours (max. working time: 4 hours), max. working time: 8 hours, e.g. B. Divided line: 4:00, the heater working time is 4:00-0:00; Is 12:00-4:00 (heating not working). If you do not want to start heating immediately (delay 2 hours to start heating automatically). The time is set to 6:00. Mode B: The heater starts working immediately after setting (no working time), maximum working time: 12 hours. 3. Time Setting: Press the up button "" or down button "" to set the time. 3 seconds later, the countdown will start from the set time and it will turn off automatically when the screen shows 0:00. The default time is 2:00. 4. Temperature setting: temperature range: 40-105 C, press the up button "" or the down button "" to adjust the temperature. 3 seconds later the current temperature is displayed. 5. Turn on/off the sauna heater. 6. With temperature sensor: 3m length heat-resistant cable for installation in the room. 7. Overheat protection: when the temperature reaches 150, it will automatically turn off to avoid scalding. Reminder functions: 1. The temperature display "----L" on the screen means the temperature sensor is not connected properly (or the circuit is broken) or the temperature is below -10. 2. The temperature display "----H" on the screen means temperature sensor short circuit or temperature over 110. 3. The time is displayed in countdown mode. Note: For more information about functions and installation, please refer to our English user manual.