Best Electronic Power Meter

EXTECH INSTRUMENTS RE300 ExStik ORP Meter

Product 1: Build Over 750 Experiments With 80 Parts.
Product 1: Toy Industry Association - Specialty Toy Of The Year, Dr. Toy 100 Best Children's Products, Dr. Toy 10 Best Educational Products.
Product 1: Parts Included: Photoresist Or, Power Amplifier, Variable Capacitor, Analog Meter, Solar Cell, Computer Interface, Full Color Manuals.
Product 1: Includes Snap case 7 Heavy Duty Plastic Case With Custom Foam Inserts For Housing Your Snap Circuits Parts.
Product 2: With this building toy, young engineers can assemble over 100 different electronic circuit projects with just 30+ electronic parts..

Automatic extending 95 millimeter f14 lens with two focus zones (0.9 to 3 meter and 3 meter to infinity).
Optical viewfinder. Tri-pod socket. Four size AA 1.5 V alkaline batteries (Best with Polaroid AA batteries). Dimensions- (not including protrusions) 6.6 x 3.7 x 4.7 inches.
Picture size 62 millimeter × 99 millimeter, close-up lens for shots up to 40 centimeter from the subject. Shutter release- Programmed electronic shutter release, 1/64 sec - 1/200 sec. Power supply- Four size AA 1.5 V alkaline batteries (LR6), capacity - 10 film packs (Based on our test conditions).
Light and dark control to help add high and low-key effects in the picture. Fill-in flash by flash-on button.
Works with Fujifilm Instax Wide Film only - ISO800. Film size: 3.38 x 4.25(inches), picture size: 2.44 x 3.9 (inches).

【High-precision】Accuracy pH calibration solution powder is produced with premium quality material under strict conditions and sealed by durable moisture-proof individual packets so please rest assured it..
【Easy to use】pH buffer powder is save time and money.Only need open the packet then mix the power with distilled water and wait a few seconds for the result..
【Widely Used】pH meter buffer solution powders is suitable for testing pH balance of drinking water, pool, aquarium etc. It also can help you to test the pH of your beer or wine with your calibrated pH meter..
【Lightweight and Portable】Individual sized packets suitable for travel and long time storage.Kindly note:It can be work for any electronic pH Meter..
【15 Packs】The packaging includes each 5 bag of pH 4.01/6.86/9.18 buffer powder, can be used to all pH needs,cost-effective and flexible to use..

Accurate RPM Meter: rotational speed measurement range is 2.5RPM-99999RPM, resolution ratio: 0.1 rpm, precision :±(0.1%n+5d)rpm. Adopt the lastest microprocessor and laser technology, ensure the tachometer more accuracy and intelligent.
Memory Function: laser tachometers can automatically record the maixumum value/ minimum value/ last measure value/ average value after shut down the instrument. Super easy to review the previously measured memory values.
User Friendly Design: This digital tachometer RPM Meter features large clear LCD backlight display for easy reading even in dark place, battery low power indication and auto shutdown after 60s. Tachometer comes with 3-peice reflective tapes more conveneint and easy to measurement.
Widely Application: The tach meter suit for measurement rotate speed, linear velocity or frequency of motor, impeller blades, expansion cylinder and spindle, capable of measuring range from 2.5RPM-99999RPM.
Durable Material: Tachometer shell is made of solid ABS plastic, optimized electronic elements to make the measurement value reliable. Compact size and lightweight easy to carry and operate.

...(radio frequency) radiation. This high-grade stainless-steel hat is not only corrosion-resistant but also highly conductive making it the perfect radiation blocker at homes, offices, schools and other places with EMF radiation incidence..
Effective Anti-Radiation Fabric - Most homes and offices use a smart meter, an electronic device that records electrical consumption. The device then transmits this data to the electrical supplier for billing. Smart meter transmittal gives off radio frequencies (RFs) which can be harmful to health. The cover blocks off up to 98% of the radiation emitted by this electronic device..
Easy Installation With Patent Pending Magnetic Holders - The EMF DEFENDER smart meter EMF/RF shield uses patent pending magnetic holders to keep shield in place, the device can fit most, but not all, meters sold across the US and Canada. Measures 7 inches in diameter at the base. Install on your own: slide the cover in place over the meter's glass portion and adjust accordingly for a tight fit. No assembly and complicated installations required..
Sturdy And Weatherproof - Most smart meters are located outdoors that is why the RF smart meter cover is created with high grade, spot-welded 316 stainless steel meshing. This type of steel material ....

60KM/H Top Speed: Use super strong power 20000RPM 550 motor, 60A Electronic Speed Control, electric energy converted into power maximizely, 4 wheels drive for racing car can provide strong power torque significantly make the car easy to complete difficult moves. Born to be champion..
Powerful Battery Capacity: 7.4V Lithium battery discharge current 30A. Long working time to perfectly complete a racing game..
2.4GHz Radio System with anti-jamming capability allows to race at the same time in the same track. 100 meter control distance, racing freely..
High quality strong stability material: All metal parts, high-strength Aluminum alloy frame, Zinc alloy gears strong stability and long service life, DIY upgraded..
Specially use hardware oil pressure shock absorber, much accurate and precise to perfectly absorb shock. Fast, affordable fun, excitement in water, mud and snow!.

R261020 Double C Battery 16000mAh Lithium Battery.
Apllaction:Intelligent instrument and meter,Dig,itrak sondeMemory and standby power, Alarms and security devices, Automotive electronics, Electronic toll collection,Millitary devices,Horizontal Drilling Transmitters & Locators,Digitrak sonde.
Operating temperature range: -55～85℃.

Parameter：Input voltage:AC 100-240V~50/60Hz, output voltage: DC 12V, output current: DC 5A..
8-way splitter cables: 16.5inch,Plug Diameter, 5.5 mm Outer, 2.1 mm Inner..
Package：1 set of DC 12V 5A power adapter (including cable) and 8-way splitter cables..
Easy to use: just plug the power adapter into the power supply, and it can be used. Eight power lines can supply power for multiple electronic devices..
Applied range：Very suitable for closed-circuit television and video cameras in home or office..