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    1200 Watt Pure Sine Wave Power Inverter, 24 Volt DC to 240 Volt AC

    5 out of 5 based on 7 reviews | Write a review
    Cheap 1200 watt continuous / 2400 watt surge power inverter outputs pure sine wave, ideal for home and car use, converting DC power (optional 12V/24V/48V) to AC power (optional 110V/120V/220V/230V/240V 50/60Hz), with full protections against under and over voltage, overload, overheat, short circuit (polarity reverse connection), built-in intelligent cooling fan, low noise and long use time.
    SKU: ATO-PI-1200W
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    1200 watt DC to AC power inverter outputs pure sine wave with high efficiency, and provides multi-protection with built-in fuse and intelligent cooling fan. It is a best power inverter for car and home use to charge the devices like cell phones, laptops, tablets, CD/DVD player, digital camera, TV sets, microwave ovens, etc.


    • Provides 1200 Watt continuous DC to AC power and 2400 Watt peak power
    • Pure sine wave inverter, capable of producing clean & stable electricity
    • Soft-start technology
    • USB charging port for powering your phone, laptop, etc.
    • Aluminum alloy shell with good heat dissipation
    • Multiple protections against under and over voltage, over load, over temperature, short circuit and input polarity reverse connection
    • ON/OFF switch design, easy to use
    • Intelligent cooling fan, long working life

    Note: Refrigerators or devices similar to refrigerator loads need to choose an inverter with a power of more than 10 times.


    Model ATO-PSWI-1200
    Output Power 1200 Watt
    Peak Power 2400 Watt
    Phase 1- Phase (L, N, G), Do Not provide split phase configuration (L1, L2 + N, G)
    Input Voltage* DC 12V DC 24V DC 48V DC 12V DC 24V DC 48V
    Input DC Voltage Range 10-15.5V 20-31V 40-61V 10-15.5V 20-31V 40-61V
    Output Voltage* 100V AC or 110V AC or 120V AC ±5% 220V AC or 230V AC or 240V AC ±5%
    No-load Current (less-than) 0.8A 0.5A 0.3A 0.5A 0.5A 0.3A
    Output Frequency* 50Hz±0.5Hz or 60Hz±0.5Hz
    Output Wave Pure sine wave
    Waveform Distortion THD<3% (linear load)
    USB Port 5V 1A
    Outlets Type Universal outlet
    Max. Working Efficiency 90.0%
    Low Voltage Alarm 10.5V±0.5V 21V±0.5V 42V±1V 10.5V±0.5V 21V±0.5V 42V±1V
    Low Voltage Shutdown 10V±0.5V 20V±0.5V 40V±1.5V 10V±0.5V 20V±0.5V 40V±1.5V
    Low Voltage Recovery 13V±0.5V 24V±0.5V 48V±1V 13V±0.5V 24V±0.5V 48V±1V
    Over Voltage Shutdown 15.5V±0.5V 31V±0.5V 61V±1V 15.5V±0.5V 31V±0.5V 61V±1V
    Over Voltage Recovery 14.8V±0.5V 29.5V±0.5V 59V±1V 14.8V±0.5V 29.5V±0.5V 59V±1V
    Protection Low voltage, Over voltage, Over load, Over temperature, Short circuit, Input polarity reverse connection
    Cooling Way Intelligent air cooling
    Remote Control* Wired control (2m) or Wireless control (30m)
    LCD Display* Display input voltage, output voltage, frequency, power, waveform, battery capacity
    Operating Temperature ﹣10℃~ +50℃
    Storage Temperature ﹣30℃~ +70℃
    Humidity ≤90%, non-condensing
    Dimensions (W*H*D) 310*180*78mm
    Package Size (W*H*D) 350*245*145mm
    Net./Gross Weight 2.8kg/3.3kg
    Certificate CE, RoHS
    Warranty 12 Months



    1200 Watt Pure Sine Wave Power Inverter Details

    Wiring Diagram

    12V 24V pure sine power inverter wiring
    Note: The wiring of 48V inverter is similar to the 24V inverter, and the batteries are connected in series.

    LCD Display (Optional)

    The LCD display will show input voltage, output voltage, frequency, power, waveform, and battery capacity.

    Pure sine wave inverter LCD dispaly

    Protection Functions & Applications

    pure sine wave power inverter protections

    Pure sine wave power inverter applications

    • Reverse Polarity Protection
      Auto protection when input positive and negative polarities are reversely connected – The fuse blown out.
    • Short Circuit Protection
      Automatically self-protect when short circuit occurs – Red LED light ON.
    • Low Voltage Protection
      Automatically protect when in low voltage – Alarm first, the voltage continuously reduces, the red light is on and the inverter shuts down.
    • Over Voltage Protection
      Automatically protect when in high voltage – Red LED light is on, and the inverter automatically shuts down.
    • Over Temperature Protection
      Automatically self-protect when at high temperature – Alarm first, the temperature continuously rises, the red light is on and the inverter shuts down.
    • Overload Protection
      Automatic self-protection when there is overload – Red LED light is on and the inverter automatically shuts down.

    Tips: Types of power inverters

    1. According to the frequency of inverter output AC power, it can be divided into industrial frequency inverter, intermediate frequency inverter and high frequency inverter.
    2. According to the inverter output phase, it can be categorized into single-phase inverter, three-phase inverter and multi-phase inverter.
    3. According to the flow direction of the inverter output power, it includes active inverter and passive inverter.
    4. Based on the forms of inverter main circuit, it consists of single-ended inverter, push-pull inverter, half-bridge inverter and full-bridge inverter.
    5. According to the type of inverter main switching device, it can be divided into thyristor inverter, transistor inverter, field effect inverter and IGBT inverter and so on.
    6. According to the DC power supply, it can be classified into two: voltage source inverter (VSI) and current source inverter (CSI).
    7. Based on the inverter output voltage or current waveform, it can be divided into sine wave output inverter and non-sine wave output inverter.
    8. According to the inverter control mode, it includes frequency modulation (PFM) inverter and pulse width modulation (PWM) inverter.
    9. According to the inverter switching circuit work mode, it can fall into resonant inverter, fixed frequency hard switching inverter and fixed frequency soft switching inverter.
    10. According to the inverter commutation mode, it can be divided into load converter inverter and self-commutated inverter.

    In this video, ATO makes a simple test on the input and output voltage of 1000W 24 DC to 220V AC pure sine wave power inverter. And, this power inverter is used to power a cell phone and a fan which work normally.

    How to Diagnose Inverter Problems and Repair
    An inverter is a power conversion device. The basic working principle of an inverter is to convert direct current into high-frequency, high-voltage alternating current through pulse width modulation (PWM) technology. The core part of the inverter is a PWM integrated controller, which is responsible for generating PWM signals and converting DC power to AC power through MOS switching tubes. A blown fuse is one of the most common reasons why an inverter has no output. This video will show you how to perform a simple diagnosis of a failed inverter and how to fix the problems.

    Existing reviews of 1200 Watt Pure Sine Wave Power Inverter, 24 Volt DC to 240 Volt AC
    Works better than I thought
    I use this 1200W pure sine wave power inverter as a backup power supply for the boiler, it works better than I thought, and the price is right. I compared the prices of several inverters, and finally chose this one.
    From: Drew | Date: 12/01/2023
    Was this review helpful? Yes No (0/0)
    Good emergency backup!
    So far, so good. Installed this 1200 watt pure sine wave inverter in the very back area, using the 2' fairly thick wires, to the prius's 12- volt battery, which is below the trunk area. It works perfectly, with no shutdown, overheating, or anything.
    From: Zxenith | Date: 24/05/2022
    Was this review helpful? Yes No (0/0)
    Great 1200W pure sine wave inverter at low price!
    No cons so far! Runs my compact fridge, cordless tool charger, as well as my corded power tools! I direct wired mine , because I know a cigarette lighter plug is only good for around 750 watts, and this unit is rated at 1200 watts. As with all Bestek products is is very high quality, compact, and a great value!
    From: zta | Date: 23/05/2022
    Was this review helpful? Yes No (0/0)
    Superb power inverter
    During the last storm I ran a drop cord into the garage and then powered my refrigerator, freezer, router, and TV all day. I will definitely purchase this pure sine wave power inverter again!
    From: Glack | Date: 19/04/2022
    Was this review helpful? Yes No (0/0)
    Sufficient for my need
    This is the best pure sine wave inverter I ever purchased. If a 1200 watt inverter is sufficient for my need and portability is important, I strongly recommend this one. I will order more.
    From: Shaun | Date: 23/03/2022
    Was this review helpful? Yes No (0/0)
    Extremely happy with this power inverter
    Brought this power inverter for my friend in Puerto Rico. This inverter has performed flawlessly so far. It has been able to power up the essentials such as refrigeration and other essential items in the house. Extremely happy with it.
    BTW, the manual is very important when you met any problem during using. It will tell you how to do and what happened on it. Really appreciated.
    From: Samuel | Date: 09/04/2019
    Was this review helpful? Yes No (0/0)
    An attractive 1200W power inverter and pretty clean waveform
    This is the second inverter that I bought this month, and the first one I bought on other websites broke down the next day. I've been using this new 1200W inverter for half a month, it works perfectly, and I've just been trying to pull over 20 10-watt bulbs.
    From: Roderick | Date: 30/11/2018
    Was this review helpful? Yes No (0/0)
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