--- product_id: 1325926 title: "P4400 Kill A Watt Electricity Usage Monitor" price: "KD 15.48" currency: KWD in_stock: true reviews_count: 13 url: https://www.desertcart.com.kw/products/1325926-p4400-kill-a-watt-electricity-usage-monitor store_origin: KW region: Kuwait --- # 15A max current 4 time-frame usage modes 0.2%-2% accuracy P4400 Kill A Watt Electricity Usage Monitor **Price:** KD 15.48 **Availability:** ✅ In Stock ## Summary > ⚡ Know your watts, save your wallet! ## Quick Answers - **What is this?** P4400 Kill A Watt Electricity Usage Monitor - **How much does it cost?** KD 15.48 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/1325926-p4400-kill-a-watt-electricity-usage-monitor) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Utility-Grade Display:** Large LCD shows kilowatt-hours just like your electric bill—no surprises, just facts. - • **Plug & Play Efficiency:** Simply connect any 115V appliance and instantly reveal its true cost to run. - • **Precision Power Tracking:** Monitor volts, amps & watts with up to 0.2% accuracy for data-driven savings. - • **Power Quality Diagnostics:** Detect voltage drops and line frequency issues to protect your devices and home. - • **Multi-Period Usage Insights:** Analyze your energy consumption by day, week, month, or year to spot costly habits. ## Overview The P3 P4400 Kill A Watt Electricity Usage Monitor is a portable, highly accurate device that measures electrical consumption and power quality for 115V appliances up to 15 amps. Featuring a large LCD display and four selectable monitoring periods, it empowers users to track energy use by day, week, month, or year, helping identify energy drains and optimize electricity bills. It also tests voltage, line frequency, and power factor, making it an essential tool for both energy-conscious professionals and tech-savvy homeowners. ## Description desertcart.com Empowers You to Save Hundreds on Electric Bills Electricity bills are rising. Now you can cut down on costs and find out what appliances are actually worth keeping plugged in. Simply connect these appliances to the Kill A Watt, and it will assess how efficient they really are. The large LCD display counts consumption by the kilowatt-hour, the same as your local utility. You can calculate your electrical expenses by the day, week, month, even an entire year. Also check the quality of your power by monitoring voltage, line frequency, and power factor. Now you will know if it is time for a new refrigerator or if that old air conditioner is still saving you money. Kill A Watt can help you reduce your power bill and will help find power-wasting appliances so you are able to decide whether it is worth keeping them plugged in. For standard 115 VAC appliances only, 15 amps maximum, 125 VAC maximum. Find Out How Much Electricity You're Using The U.S Department of Energy reports that 20% of our electric bills come from items that are left plugged in when they are not in use, or items that are in standby mode. With the Kill A Watt P4400 we can monitor the energy eaters in our homes and cut down our electric bills at the same time. Plug whatever item you want into the device and it will tell you the efficiency of that item by displaying the kilowatt per hour. This device will help you determine which items are costing you the most to run. The Kill A Watt also calculates voltage, line frequency, current, and power factor. You can calculate your electric bill before you even receive it from the electric company. Test The Quality of Your Home's Power But measuring appliance consumption is just the tip of the iceberg. Because it can monitor voltage (Volt) and line frequency it can also test if an outlet is working, or evaluate the quality of the electrical power provided by your utility company. It can detect voltage drops around the house, help to predict brownout conditions or to make sure a new home's outlets are in working condition before escrow closes. About P3 International Founded in 1987, P3 International is a privately owned manufacturer of solution oriented consumer products. For the last twenty years they have strived to develop products that are easy to use and ahead of their time. Thanks to their customer-centric attitude and support from their clients, they have experienced steady growth over the past decade. They are committed to manufacturing high quality products that appeal to a variety of different people, from the environmentally conscious to the more technologically-minded consumer. With this philosophy driving them they are always looking for innovative new products which they can offer their customers. Their unique products have garnered much attention, in particular the Kill A Watt. Reviews of P3 products have been featured in newspapers such as The New York Times and The Wall Street Journal. Technical SpecificationsAccuracy: +/- 0.2% Input Power: 115 volts AC, 60 Hz Max Current: 15 amps Max Voltage: 125 volts Max Power: 1875 VA Dimensions: 5.1 inches long x 1.6 inches thick x 2.4 inches wide Approvals: ETL (c), ETL (us) Origin: China Manufacturer Warranty: 6 months Product Description Ever wonder just how much electricity your indoor garden consumes? How much "juice" you pour in to growing every day or longer amount of time? Now, with Hydrofarm's Kill-a-Watt electricity usage monitor, you're always in the know. Choose from the Kill-a-Watt's four settings to monitor your electrical usage by day, week, month, or year. Find out just how much that holiday lighting setup really costs you, or use it as a judgement call on whether it's time to replace old equipment that becomes a drag on your finances. With an easy-to-read screen. Review: Accurate, Reliable, and Essential for Troubleshooting Power Issues - Installation: literally plug-n-play. Very straightforward with no surprises . Versatility: Works well across different setups and applications, giving you flexibility in how you use it. Value for money: Priced fairly for the performance and build quality you get. Safety: Feels secure in use with no concerning heat, wiring, or stability issues. Power: Delivers consistent power without drops or fluctuations during operation. Size: Compact enough to fit in tight spaces while still being easy to handle. Review: Accurate, Simple, and Addictively Useful - Accurate, Simple, and Addictively Useful The P3 Kill A Watt Electricity Usage Monitor is one of those inexpensive gadgets that quietly changes how you think about energy use. I first bought it to see how much power my old refrigerator was pulling—and ended up testing every appliance in the house. Setup is instant: plug it into the wall, connect any device, and the bright LCD display immediately shows volts, amps, and watts in real time. Leave it running for hours or days, and it totals up the kilowatt-hours (kWh), letting you see exactly what that appliance costs you per day or month. What makes it so helpful is how accurate and intuitive it is. You don’t need to be an engineer—just read the wattage and multiply by your utility rate. I found a few “phantom” power hogs drawing 10–20 watts even when off (like a cable box and an older UPS). It’s also great for testing PC builds, aquarium setups, or any electronics to ensure your power supply is sufficient. The build quality is solid, and the display remains easy to read even after years of use. The only caution: it’s designed for 115V North American outlets only—not for international use. Bottom line: A must-have tool for anyone curious about energy use or looking to cut electric bills. Simple, accurate, and surprisingly enlightening—it pays for itself quickly. ## Features - Choose from the Kill-a-Watt's four settings to monitor your electrical usage - Monitor your electrical usage by day, week, month, or year - Features easy-to-read screen - Electricity usage monitor connects to appliances and assesses efficiency - Large LCD display counts consumption by the kilowatt-hour - Calculates electricity expenses by the day, week, month, or year - Displays volts, amps, and wattage within 0.2 - 2.0percent accuracy - Compatible with inverters; designed for use with AC 115-volt appliances ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00009MDBU | | Amperage Capacity | 15 Amps | | Batteries | 1 CR123A batteries required. | | Batteries Included? | No | | Batteries Required? | No | | Certification | No | | Color | No Color | | Customer Reviews | 4.6 4.6 out of 5 stars (9,733) | | Date First Available | September 9, 2004 | | Display Style | LCD | | Included Components | usage monitor | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 5.6 ounces | | Item model number | LGP4400 | | Manufacturer | P3 | | Material | Other | | Number Of Pieces | 1 | | Part Number | P4400 | | Pattern | Monitor | | Power Source | air-powered | | Product Dimensions | 8.4 x 2.1 x 6.1 inches | | Size | Original version | | Special Features | Portable | | Style | 1 Pack - Model P4400 | | Usage | personal | | Voltage | 115 Volts | | Warranty Description | 1 Year Limited | ## Images ![P4400 Kill A Watt Electricity Usage Monitor - Image 1](https://m.media-amazon.com/images/I/61FOAk4UA5L.jpg) ![P4400 Kill A Watt Electricity Usage Monitor - Image 2](https://m.media-amazon.com/images/I/81iNu+VOrXL.jpg) ![P4400 Kill A Watt Electricity Usage Monitor - Image 3](https://m.media-amazon.com/images/I/51oVrphFwTL.jpg) ![P4400 Kill A Watt Electricity Usage Monitor - Image 4](https://m.media-amazon.com/images/I/91XZByzE2rL.jpg) ![P4400 Kill A Watt Electricity Usage Monitor - Image 5](https://m.media-amazon.com/images/I/61XZGr66kdL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: what is the difference between the p4400 and the p4460?** A: This device, the P4400, will reset all of its timed measurement values to zero if power is lost or the device is unplugged. The P4460 has "non volatile" memory, using a battery to provide the necessary voltage to power the (S)RAM memory, which means that it will not lose the data if power to the 4460 is lost. The P4460 also will let you input the cost per KWH from your provider to calculate the cost to operate the appliance over a week, month and year (assuming that your use is the same during the extrapolated period as it was during the measurement period). For me the data retention feature is well worth the extra $4 since I want to keep track of the energy used by a window air conditioner which will vary by the outdoor temperature, the sun hitting the building, the humidity, etc. **Q: .most of my outlets are 20 amps or more, the killawatt is only 15 amps does that make a difference in calculations, the garage is 40 amp.** A: This will only plug into a 120 VAC outlet. The standard 120 VAC outlet in almost all homes is only rated 15A continuous duty, but can take more for a second like when a room air conditioner compressor starts up. This is probably following those same rules. If the wiring is 12 gauge or thicker, it can be hooked to a 20 amp breaker even though all of the outlets in the average house are rated 15A, at least in most states. The reality of the matter is that wiring and outlets can always take somewhat more than the ratings and everything is oversized for safety. But is is always considered unsafe to plug in any device that uses more than 15 amps into a typical house outlet. An exception is commercial outlets that fit both home devices and heavier duty commercial device plugs and those outlets are usually rated at 20 amp. Those outlets are more common in businesses and uncommon in homes. An air conditioner or commercial refrigerator that uses more than about 10 continuous amps will normally be a 240 volt appliance and require different type of outlet designed for 240 volts, same is true of typical electric clothes dryer and this device would not adapt to those. **Q: Will this work with two prong (non-grounded) outlets?** A: Be Careful- defeating a polarized plug can be dangerous. The wide prong is neutral and connected to ground. The narrow prong is "hot" (energized) compared to ground. Some devices such as tools, chargers, and others use polarization to reduce the chance of electrical shock. If the device, such as most lamps, doesn't have a polarized plug then there is no concern, an adapter or extension cord is fine. If a device has a polarized 2 prong plug and you decide to use an adapter anyway, make sure the KillaWatt's plug's small slot on front is aligned with the wall plugs small slot and the larger slot on front aligns with the larger slot on the wall plug to maintain polarity. It is impossible to reliably maintain polarity using an extension cord so I would never attempt it. I would never cut off the ground prong, the blade prongs on the KillaWatt are the same size because the ground prong aligns the correct prongs with the wall plug so they do not need to be different sizes. Once you cut off the ground prong the odds are 50/50 of dangerously reversing the polarity of the plug on the front of the KillaWatt since it may, or may not, be plugged in correctly. Similarly if the wall plug slots are both the same size you are once again at 50/50 odds of plugging the KillaWatt in incorrectly with an adapter making the KillaWatt itself an "adapter" permitting you to plug polarized plugs into unpolarized wall plugs. Once again if the lamp etc doesn't have a polarized plug this is not an issue. (If you want to know more about why polarization makes things safer just ask) **Q: Hi, is this unit able to capture peak current draw? I want to see if my audio amplifier ever gets close to tripping my breaker.** A: I don't have it but from what I know about it is that you can measure watts for long period of time, So - reset meter, set it to continuously measure watt*hour (WH, watt for 1 hour=60 minutes*60=for 3600 seconds), connect your turned off amp, turn it on and immediately turn it off exactly after 1/2 second. Meter SHOULD show wattage consumed for 1/2 second because they say it measures power FEW TIMES PER Second (though still will be measuring after amp will be turned off, but it is ALMOST not consuming power) - that will be your surge power - multiply it by 3600 and by 2 (because 3600 for hour and for whole 1 sec it would be twice higher) and divide it on 115, or whatever voltage will be during measurements (put voltmeter to measure voltage, or just measure voltage before starting test, though voltage can can change fast). And you will get average current for first 1/2 sec. If you manage to turn it off exactly after 1/4 sec (but don't forget to multiply measured WattHour by 3600 and by 4, because 3600 higher for 1 hour and for whole 1 sec it would be 4 times higher) then measuring current surge will be more accurate. This calculation imitates WattHours consumed by amp as if it worked with average current equal to surge current for 1 hour, and that is why you divide those WattHours on voltage to get average current equal to surge current (which actually happened only during part of first second). So, if meter accurate enough to measure small power consumption then all this will work.But remember: amp MAY not like it, though SHOULD Tolerate such thing - anyway, don't blame me if something happens to it. I would do that myself, i believe this is not unusual for amp. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Accurate, Reliable, and Essential for Troubleshooting Power Issues *by N***U on May 2, 2026* Installation: literally plug-n-play. Very straightforward with no surprises . Versatility: Works well across different setups and applications, giving you flexibility in how you use it. Value for money: Priced fairly for the performance and build quality you get. Safety: Feels secure in use with no concerning heat, wiring, or stability issues. Power: Delivers consistent power without drops or fluctuations during operation. Size: Compact enough to fit in tight spaces while still being easy to handle. ### ⭐⭐⭐⭐⭐ Accurate, Simple, and Addictively Useful *by E***S on October 20, 2025* Accurate, Simple, and Addictively Useful The P3 Kill A Watt Electricity Usage Monitor is one of those inexpensive gadgets that quietly changes how you think about energy use. I first bought it to see how much power my old refrigerator was pulling—and ended up testing every appliance in the house. Setup is instant: plug it into the wall, connect any device, and the bright LCD display immediately shows volts, amps, and watts in real time. Leave it running for hours or days, and it totals up the kilowatt-hours (kWh), letting you see exactly what that appliance costs you per day or month. What makes it so helpful is how accurate and intuitive it is. You don’t need to be an engineer—just read the wattage and multiply by your utility rate. I found a few “phantom” power hogs drawing 10–20 watts even when off (like a cable box and an older UPS). It’s also great for testing PC builds, aquarium setups, or any electronics to ensure your power supply is sufficient. The build quality is solid, and the display remains easy to read even after years of use. The only caution: it’s designed for 115V North American outlets only—not for international use. Bottom line: A must-have tool for anyone curious about energy use or looking to cut electric bills. Simple, accurate, and surprisingly enlightening—it pays for itself quickly. ### ⭐⭐⭐⭐⭐ Good product, do the expected work. *by A***S on November 9, 2008* This product works as expected. I purchased this unit to make an analisis about parasit power consumption in my electronic appliances in home. I discover the following: - the lcd requires 180 ~ 230 watts. After going to standby or shutdown, the tv use 60 watts for 3 minutes. This is to cool down the lcd lamp for protection (fans and additional circuit works for this time). Can be a mistake if I remove the AC cable power or enterely shutdown the tv without allow this process to finish. Good discover. After this 3 minutes, the standby mode on the monitor only requires 05. to 1w. - my motorola cable system requires the same ammount of power (27 ~ 30 watts) no matter if this unit is ON or off!!!!... all the time is fully powered (because have an internal hard drive). But I believe (wrong!) this unit must save about 50% if is off.. but no!!!! - the blackberry / sony ericson chargers do not drain any power (0W) from AC if the phone itself is not connected. I DON't need to disconect this chargers from the outlets. - My APC Smart UPS 1500 drain 30 WATTS! even when is completely turned off!!!Is better to disconnect this unit from the ac cable!!! amazing!... - My pc (dimension 9150) is a power hungry pc. Because have pentium D (first edition) who requires a lot of power. This pc requires 230 watts but when I play Command Conquer (3D real time strategy) and because I have a HD2900 ATI High Definition card who requires 650 watts PSU. Interesting: when I play the game the power rise from 230 to 300~320 watts!!!! This unit is very usefull to understand how the electronic systems works and if are energy efficient and how you must manage this units to save power and money. Highly recommended, is cheap and you can check your ac freq and exact voltage (i have 128 volts from 127 expected in the ac line)...... enjoy and sorry my english ## Frequently Bought Together - P3 P4400 Kill A Watt Electricity Usage Monitor - Upgraded Watt Power Meter Plug Home Electrical Usage Monitor Consumption, Energy Voltage Amps Kill Tester with Backlight, Overload Protection, 7 Modes Display - Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Tester for Standard 3-Wire 120V Electrical Receptacles --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.kw/products/1325926-p4400-kill-a-watt-electricity-usage-monitor](https://www.desertcart.com.kw/products/1325926-p4400-kill-a-watt-electricity-usage-monitor) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-20*