Time and Frequency
Stratum 1 GNSS time sync servers over NTP, sub microsecond grandmaster clocks over PTP IEEE 1588, IRIG-B distribution and synchronised displays from 14 mm to 150 mm digits.
GNSS Time Sync Server and Industrial Instrumentation Manufacturer
TIME AND FREQUENCY SOLUTIONS
One trusted clock for every system on your site.
Sertel Electronics is an Indian GNSS time sync server and industrial instrumentation manufacturer, designing and building precision timing, positioning, atmospheric, solar and process measurement equipment in Chennai since 1990 for ISRO, HAL, BHEL, NTPC, DRDO and the Indian Armed Forces.
35+
Years of expertise
8
Product lines under one roof
15000+
Projects executed
What we manufacture
Eight product lines, one manufacturer, one point of accountability.
Design, assembly, calibration and service sit under one roof in Chennai. When a question comes back from site, it reaches the engineer who built the unit rather than a distributor who resold it.
GNSS Solutions
Multi constellation receivers tracking GPS, GLONASS, Galileo, BeiDou, IRNSS and SBAS, with Rubidium holdover for timing duty and RTK capability for survey and marine positioning.
Upper Air Sounding and Weather Stations
Radiosondes, pilot sondes and ozone sondes with matched ground stations and antennas, plus automatic weather stations built around the T-AWS-DL-300 logger for unattended field duty.
Renewable and Solar
String level monitoring, combiner protection, battery health tracking and plant wide data logging that feeds existing SCADA rather than demanding a parallel monitoring layer.
Process Control and Condition Monitoring
Furnace viewing cameras, panel meters, flow meters and non contact level measurement, alongside vibration sensing and thermal imaging for predictive maintenance on rotating assets.
Panel Instruments
Fibre optic converters and galvanic isolators that keep 4 to 20 mA loops accurate and RS485 buses intact across long runs, high noise environments and uneven earth potential.
In-house design
Engineering in Chennai
Manufactured in-house
Assembly and calibration under one roof
Direct support
From the team that builds the instrument
Featured products
Built for accuracy.
Engineered for reliability.
GPS / GNSS NTP Time Server
PreciseSync - SMC - 300
A 1U 19 inch rack Stratum 1 server with 14 ns timing accuracy under GNSS lock and a front-panel LCD. It drives slave clocks and digital displays directly, alongside NTP, IRIG-B and DCF77 outputs.
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MULTI-FREQUENCY · MULTI-CONSTELLATION GNSS
GNSS receiver (MF-GNSS-300)
Multi-constellation GNSS reception for positioning, navigation and timing, with interfaces and configurations matched to the application.
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Dual-Band GNSS Meteorological Radiosonde
Radiosonde
A lightweight balloon-borne instrument that transmits real time profiles of pressure, temperature, humidity and GPS-derived wind data up to stratospheric altitudes. Designed for daily operational launches, it provides high sensor accuracy, stable telemetry, and dependable performance in extreme atmospheric conditions.
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Weather Stations
Data Logger
An industrial-grade data acquisition unit with a 24-bit ADC, 16 analog inputs, and 8 digital I/O channels. Captures readings at up to 1000 Hz and transmits them to cloud platforms such as AWS IoT Core over 4G/LTE, Ethernet, or satellite telemetry.
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Smart PV DC Combiner & String Monitor
String Monitoring Box (SMB)
String Monitoring Box for PV DC combiner applications with per-string current monitoring, bus voltage monitoring and remote alarms.
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DUAL-BAND INFRARED - HANDHELD - INDUSTRIAL GRADE
Thermal Imager
A handheld infrared imager for inspecting panels, switchgear, motors and process lines under load. It shows heat patterns the eye misses, so loose joints, overloaded phases and failing bearings are found and recorded without contact.
Know moreIndustries served
Where a wrong reading costs more than the instrument.
Sertel equipment is specified into sites that cannot stop to investigate a doubtful measurement. The sectors below are where our eight product lines are installed most.
Airports & ATC
PreciseSync-GMC-300 systems synchronize radar, ADS-B, ATC voice recorders, MET sensors and airport IT networks to one UTC clock.
Audio Video & Broadcast
Sertel timing systems keep broadcast, AV, studio, recording and archive systems aligned to one common time reference.
Banks, Finance & Trading
PreciseSync systems keep banking platforms, trading engines, ATM networks and payment gateways synchronized to a traceable UTC reference.
Data Centers and IT
PreciseSync provides a dedicated UTC time source for servers, storage, virtualisation clusters, security tools and disaster recovery environments.
Healthcare Facilities
Sertel timing systems keep hospital IT, diagnostic systems, access control, CCTV and critical facility logs aligned to one auditable clock.
Industrial Automation
PreciseSync NTP and PTP servers lock PLCs, SCADA stations, robotic cells, historians and IIoT gateways to one plant-wide UTC reference.
Meteorology
Sertel supports atmospheric observation with radiosondes, pilot sondes, ozone sondes, GPS/GNSS time servers and ground receiving stations.
Power Utilities
Sertel PreciseSync systems synchronize SCADA, DCS, protection relays and IEC 61850 substations to one GNSS-traceable UTC reference.
Public Administrations
PreciseSync gives government campuses, data centers, smart city systems and civic offices an on-premises Stratum 1 time reference.
Railways & Metros
Sertel timing systems align signalling, telecom, station systems, control rooms and passenger information networks to one trusted time source.
Renewable Energy
Sertel connects string combiner boxes, per-string monitoring, LoRa wireless links and battery monitoring into one Modbus-ready solar monitoring chain.
Schools & Universities
Sertel timing systems align bells, displays, access control, IT logs, labs and campus systems to one GPS-referenced clock.
Telecom Networks
PreciseSync NTP and PTP servers provide telecom networks with a GNSS-disciplined time source for legacy, 4G and 5G infrastructure.
About Sertel
Designed, built, calibrated and supported in Chennai since 1990.
Sertel Electronics Private Limited is an industrial instrumentation manufacturer working across precision timing, satellite positioning, atmospheric measurement, solar monitoring and process control. Thirty five years of supply into Indian power, defence, telecom, meteorology, solar and marine programmes has shaped how the equipment is built: for unstable supply, for heat and dust, for sites where the nearest service engineer is a day away.
Our customers include ISRO, HAL, BHEL, NTPC and DRDO, and we are an existing supplier to the Indian Army, Navy and Air Force. Every instrument is configured and calibrated for the declared application before dispatch, and support comes from the engineering team that built it rather than from a third party channel.
In house design, manufacturing and calibration
Multi constellation GNSS with IRNSS NavIC support
Calibration documentation supplied with every instrument
Custom variants for defence, power and industrial projects
Manufacturing and Capability
One facility. Every stage in house.
Chennai, India
Design, manufacturing, calibration and service
8 product lines
Timing, GNSS, sounding, weather, solar, process, condition monitoring, panel
Since 1990
Supplying Indian power, defence, telecom, meteorology, solar and marine sectors
Direct support
Application engineering from the team that builds the instrument
Send us the requirement, not just the part number.
Tell us the network size, the accuracy your system expects, the medium being measured or the conditions on site. Our application engineers will come back with a specific recommendation, a datasheet and a quotation rather than a catalogue.
