Theta 300W Pure Sine Wave Inverter
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Theta Pure Sine Wave Inverter converts DC power stored in 12V batteries into clean AC.  Theta Pure Sine Wave inverters provide power with very low harmonic distortion, no static or humming noise Perfect for HDTVs, computers and other sensitive electronics High and low voltage protection Overload protection Over-temperature protection.

The Theta Pure Sine Wave, heavy duty inverter ensures all electrical products run at their very best.  It removes all problems linked with modified sine inverters such as small black lines on some TV screens.  It works perfectly with satellite controllers, runs microwaves at 100% power, works thryistor controlled devices.  They also eliminate problems caused by low cost, non isolated sine wave inverters, such as interference on TV screens, radio and hi-fi noise and works all CD and DVD players.  This unit runs all equipment as per the mains – guaranteed.

The 2000-3000 watt unit is capable of running a standard washing mahcine and all thyristor controlled devices which cannot be run by modified sine.  However, if there is a washer dryer then the 3000 would be best.  The units all come with a standby circuit which offers a 0.2 amp consumptions with no load and a low on line loss of about 1.2 amps if power saver not engaged.


CE Aprroval        ROSH

 The Theta Pure Sine Wave Inverter is CE and ROHS certified products and come with limited one-year OME warranty.


Download: Theta Inverter User Manual & Technical Specification (Please click to download)


Inverters are used in any electric system where AC power output is needed.  You are already familiar with AC power:  it is the power in your house when you plug something into the wall.  The inverter's job in a solar energy system is to convert the DC electricity, such as from a battery bank, to AC electricity that can be used with typical household appliances.  Solar panels also produce DC electricity.  Inverters are used in homes, business, RVs and boats.  Off Grid Inverters are common in solar electric.  Solar electric (or PV) systems can operate with or without batteries. Since each inverter needs proper disconnects on the AC and DC side, often people choose one of our self contained Solar Battery.  By mounting one or two inverters on a Solar Battery, that is wired with the appropriate disconnects, you have yourself a neat and safe inverter system.

Sizing an off grid inverter (that needs batteries) is relatively straight forward.  It must be large enough to handle the total amount of watts you will be using at one time.  Start by listing all of the appliances, etc that you use and their wattages in our load calculator.  This form will display the number of watt hours you use in a day.  In order to properly size an inverter, consider which of those loads you will be using simultaneously and add up their wattages only.  For example, if you will be using the 1500 watt microwave at the same time you will be running 100 watts of lighting and also running a refrigerator that will draw 500 watts of instantaneous power, you will need an inverter that can handle at least 2100 watts (1500 + 100 + 500).  Once you have identified a minimum wattage, you will select an inverter that has the same nominal voltage as your battery bank (12, 24, or 48 VDC).


  • Item #: SPM300PS

Theta 300W Pure Sine Wave Inverter

Price: RM350.10
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