Sertel Electronics Pvt. Ltd. Manufactures Microprocessor Based STFS Decoder. Sertel Electronics Pvt. Ltd. Is an ISO 9001:2000 certified company and develops GPS Based Time Synchronisation System. The Microprocessor Based STFS Decoder is used to ensure high accuracy time synchronisation and frequency calibration. It is a fully automatic machine which requires minimum amount of operator involvement. It is a low powered device powered simultaneously by 24V DC and 220V AC offering continuous operation in case of mains failure. This Microprocessor Based STFS Decoder also provides TTL level1PPS pulse output synchronized to NPL Time Standard within +/- 20 microseconds. It also gives 5V TTL 1MHz frequency output phase locked to the received signal with an accuracy of 10-9.