The BIS CRS (Compulsory Registration Scheme) certification is mandatory for UPS/Inverters of rating ≤10kVA in India under the Electronics and IT Goods Order, 2012. The applicable Indian Standard is IS 16242 (Part 1): 2014, ensuring product safety, performance, and reliability. Manufacturers must test their products at BIS-approved labs, submit an application via the BIS CRS portal, and obtain approval before selling in India. If required, BIS may conduct a factory inspection. The certification is valid for two years, requiring periodic renewal and compliance. This ensures product quality and safety for consumers.