Product Features: 1. All products are subject to aging test to ensure that each product is a good product before leaving the factory 2. The product adds a cycle start and stop function (if the product is set to work for 2/4/8 hours regularly, it will work for 2/4/8 hours at the same time every day in the case of uninterrupted power without turning off the switch) 3. The product is a wide voltage range of 110V-220, compatible with 50-60Hz, 334 capacitors are long-life professional capacitors, and the warranty is 2 years 4. The product adds varistor and temperature insurance 5. Product thyristor increased to 8A, external power: 110V, 100W/220V, 200W, strong and weak electrical isolation optocoupler is added to the drive port to avoid damage to the IO of the microcontroller 6. The product software adopts periodic timing with high precision 7. The product meets the CE design requirements, the safety clearance meets the national standard, and the EFT surge shock meets the EMC test requirements 8. All products are certified, safe and secure 9. This product can promote the formation of vitamin D and promote the healthy growth of pets