Peak Load Peak Output
Handles higher load comfortably even when multiple appliances start together - without tripping, shutting down, or missing a beat.
Home Inverters
Sigma Series
Square Wave
Sigma Series
Dependable Square Wave Backup for Everyday Indian Homes
Designed to meet the everyday power needs of modern homes, the Sigma Series offers reliable and efficient square wave backup engineered for smooth operation, faster charging and enhanced protection — keeping your home comfortable through every power cut.
Range700 VA -
2000 VA
Warranty4 Years
(48 Months*)
WaveformSquare
Wave
What Makes It Different?
ReliabilityLife Uninterrupted
Zero Volt Pickup - Works even after Deep Discharge
Keeps electricity available in extreme low-voltage situations, reducing chances of complete blackout.
In-a-wink Static Changeover - Instant & Silent Switching
Switchover happens so fast that your lights, fans, and Wi-Fi never flicker — not even for a split second.
Total Cost of OwnershipA Lifetime of Value
Wide AC Voltage Range + Lightning Protection
Stable operation in real Indian conditions, reducing chances of breakdowns or damage during voltage fluctuations.
Battery High Protection
Battery always stays in the safe zone - neither deep discharge nor overcharging — it performs better and lasts much longer.
State-of-the-Art High-End Microcontroller - High Million Instructions per Second (MIPS)
Keeps the system stable during changeover and voltage fluctuations, improving battery life and providing smooth/ noiseless operation.
Benefits Built For You
Value-for-Money Backup for Everyday Loads
Confident Performance on Heavy Start-Ups
Protection Against Indian Voltage Swings
Longer Life, Lower Running Cost
4-Year Warranty Assurance
01— 05
A Perfect Power Back up for
Homes
Small Retail Shops
Coaching Centres
Small Workshops
Farmhouses
Low-Voltage Rural Homes
FAQs
What is the Eastman Sigma Series home inverter?
The Sigma Series is a square wave home UPS built for everyday Indian homes, available from 700 VA to 2000 VA. It delivers efficient backup with faster charging, wide voltage tolerance and enhanced protection.
Which inverter capacity should I choose for my home?
Choose a model based on the running and starting loads of the appliances you want to power. Use our load calculator to estimate your requirements.
Is a square wave inverter good for home use?
Square wave inverters provide economical backup for compatible everyday appliances. Check appliance requirements and choose a capacity that supports the connected load.
Does the Sigma Series protect against voltage fluctuation and lightning?
The Sigma Series supports a wide AC voltage range and includes lightning protection to help it operate in fluctuating supply conditions. Follow the installation and earthing requirements for your model.
Will the inverter start if the battery is deeply discharged?
Zero Volt Pickup supports recovery after deep discharge. Available backup still depends on the battery charge and condition.
Will my lights and Wi-Fi flicker when power fails?
Fast static changeover helps reduce interruptions when mains power fails. Equipment requirements and the connected load determine actual performance.
How does the Sigma Series extend battery life?
Battery protection helps prevent deep discharge and overcharging, supporting battery performance and service life.
What is the warranty on the Eastman Sigma Series?
The Sigma Series is shown with a 4-year (48-month*) warranty. Contact Eastman for the terms applicable to your model.