Group 1 - The PSB certification in Singapore is managed by Enterprise Singapore and focuses on the safety and electromagnetic compatibility (EMC) of consumer electronic products [1][2] - Key testing standards include IEC/EN 60950-1 for IT equipment and IEC/EN 62368-1 for audio/video and ICT devices, which is gradually replacing 60950-1 [3] - Other common standards include IEC/EN 60335-1 for household appliances and IEC/EN 60065 for audio/video equipment, which has been replaced by IEC 62368-1 [3] Group 2 - The certification process involves testing by recognized laboratories such as TÜV and SGS, submission of documents including test reports and product photos, and approval by Enterprise Singapore [3] - The PSB certification is typically valid for five years but requires annual supervision [3] - Products must display the PSB mark and certification number as part of labeling requirements [3]