About This Product[Newly Upgraded Dual Head] This dual-head reptile heat lamp is the perfect choice for pet owners. Its two independently controllable 100W E27 heat lamp heads can meet the diverse heating needs of two or more pets simultaneously. The lamp provides a wide coverage area and a richer supply of UVA/B rays, simulating natural sunlight to promote your pet's appetite and calcium absorption.[Three-Level Adjustable Brightness] This UVA/UVB reptile heat lamp features three levels of brightness adjustment, allowing you to adjust the temperature based on real-time temperature differences.[Timer] This UVA/UVB reptile heat lamp features three timer modes: 2-hour, 4-hour, and 6-hour. Press once to start the 2-hour timer, and the light will automatically turn off after 2 hours. Press twice or three times to start the 4-hour/6-hour timer, and the light will automatically turn off after 4/6 hours without cycling.[Cycle Timer] Once in timer mode, press and hold the current timer position for 2 seconds to start the cycle timer. (The corresponding gear indicator light will continue to flash). The light will automatically turn off after 2 hours, 4 hours, or 6 hours. Then, it will automatically turn on at the same time every day and turn off after the corresponding 2/4/6 hours (the indicator light will continue to flash during this period). ( Note: When activating the cycle timer function, do not turn off the power of the connected light. Otherwise, the cycle timer function will be invalid and you will need to reset it after restarting the device.)