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Dissolved Oxygen Meter, Professional Digital Pen Type Dissolved Oxygen Test, 0.0-40.0mg/L Dissolved Oxygen Detector for for Aquarium, Aquaculture

• 【Accurate And Stable】With automatic temperature compensation function, the temperature of the solution can be automatically compensated for 0-40℃, and the reading is accurate and stable.
• 【Pen Type Dissolved Oxygen Meter】Small pen-shaped design, light and easy to move, you can test water anywhere to get the purest water.

Fishawk Dissolved Oxygen Meter, Professional Digital Dissolved Oxygen Do Meter, Portable Water Quality Tester for Aquaculture Fish Pond, Handheld Smart Meter, 0-20mg/L, ±0.3 Mg/L

• Dissolved oxygen detector, adopts a plastic shell, which is durable and corrosion‑resistant.
• Equipped with dots type backlit LCD display, easy to measure and use.

Dissolved Oxygen Meter, 0.0‑40.0mg/L Resolution Portable Professional Digital Manual Water Quality Tester Economy Pocket DO Temperature Tester Pen with Backlight Screen for Labs, Marine Aquaculture

DO9100 Portable Dissolved Oxygen Meter, 0.0-40.0mg/L, Support Single Point or 2 Point Automatic Calibration, Digital Display DO Meter Water Quality Monitor with Temperature Detector(Standard)

• [ACCURACY INSTRUMENT] DO9100 is an accuracy instrument for measuring dissolved oxygen and temperature. With built in microcomputer processor to calculate and compensate all measurement data related to dissolved oxygen and temperature.
• [PROBE] A membrane with a polarographic sensor and a thermistor for temperature measurement and temperature compensation. The permeable membrane separates the measured solution from the sensing electrode and allows oxygen to pass through the membrane to react.

Dissolved Oxygen Meter, Oxygen Analyzer, Water Quality Monitor, Freshwater Aquarium Test Kit, Digital Dissolved Meter, DO Range: 0.0‑40.0mg/L Oxygen Concentration

• AUTOMATIC TEMPERATURE COMPENSATION-----This dissolved oxygen meter with automatic temperature compensation, our product ensures precise and consistent readings regardless of the solution temperature (0-40 ℃).
• HIGH ACCURACY AND FAST RESPONSE----Experience fast and accurate testing results. This dissolved oxygen test kit can test liquids ranging from 0.0-40.0mg/L, providing you with reliable data in no time.

Fyearfly Digital Pen Type Dissolved Oxygen Analyzer, Dissolved Oxygen Meter Digital Dissolved Oxygen Analyzer 0.0-40.0mg/L Concentration Tester for Swimming Pools, Dolc Water Aquaculture

• 【Automatic Temperature Compensation】With automatic temperature compensation function, the temperature of the solution can be automatically compensated for 0-40℃, and the reading is accurate and stable.
• 【Lightweight Pen Type Meter】Small pen-shaped design, light and easy to move, you can test water anywhere to get the purest water.

Dissolved Oxygen and Temperature Meter, Portable Digital Dissolved Oxygen Meter, 0.0-40.0mg/L, 0.1 mg/L Resolution, Dissolved Oxygen DO Meter for Aquarium Lab Swimming Pool(Back Light)

• [Accuracy Instrument] DO9100 is an accuracy instrument for measuring dissolved oxygen and temperature. With built in microcomputer processor to calculate and compensate all measurement data related to dissolved oxygen and temperature.
• [Probe] A membrane with a polarographic sensor and a thermistor for temperature measurement and temperature compensation. The permeable membrane separates the measured solution from the sensing electrode and allows oxygen to pass through the membrane to react.

SRFDD Pinless Wood Moisture Meter，Digital Moisture Meter with 10 File Wood Density Selection for Wood Building Material Firewood Walls Paper Floor

• Using high frequency electromagnetic wave induction measurement.
• Digital large screen LCD monitor.

SANON Water Quality Tester, ORP-969 Redox Meter ORP Tester Portable Digital Water Quality Tester Pen for Drinking Water, Aquarium, etc

Dissolved Oxygen Accessory,DO9100 Dissolved Oxygen Meter with Temperature Detector, Portable Digital Smart Meter for Aquarium Swimming Pool(Standard (Without Backlight))

• [Accuracy Instrument] Dissolved oxygen meter is a instrument for measuring dissolved oxygen and temperature. The dissolved oxygen probe is a thin film with a polarographic sensor and a thermistor for temperature measurement and temperature compensation. The permeable membrane separates the measured solution from the sensing electrode but allows oxygen to pass through the membrane to , and the concentration can be measured.
• [Probe] Dissolved oxygen refers to the concentration of molecular oxygen dissolved in water, generally expressed in mg/L (ppm) and saturation percentage (%), which is the percentage of dissolved oxygen in 1L of water. The oxygen concentration of our dissolved oxygen meter is 0.0-40.0mg/L, most of the range of dissolved oxygen meters on the market is 0.0-20mg/L. When measuring and calibrating, needn't open the protective cover of the electrode, just put the electrode in the solution for

2023 New 18650 Battery Charger Dlyfull Rechargeable Battery Charger for Ni-MH/CD AAAA AAA AA A SC C 3.7v Lithium 22650 21700 10340 10440 14500 16340 17335 17500 17670 18500 20700 Batteries Charger

• Compatible Battery Types: 3.6V/3.7V Li-ion: 10340/17335/17500/17670/18350/18500/18650/18700/20700/21700/26650, etc.; 1.2V Ni-MH/CD: AAAA/AAA/AA/A/C/SC.
• Universal Battery Charger: 4-slot Individual charging, capable of mixed charging Ni-MH/Cd and lithium batteries. This means you can charge multiple batteries simultaneously, saving your time and improving efficiency.

Dlyfull 18650 Battery Charger 2023 NEW Li-ion Battery Fast Charging for 3.7V 26650 21700 16340(123A) 20700 18500 10340 10440 14500 17335 17670 Rechargeable Batteries

• Note:That only slots 1 and 4 can accommodate batteries with a diameter larger than 18mm.
• Individual Charging: 4 slot Individual battery charger for 3.6v/3.7v lithium 18650 26650 21700 20700 18500 17670 17500 17335 16340（123A) 14500 10440 10340 rechargeable battery.Experience the convenience and efficiency of charging multiple batteries at once.

SANON 18650 Battery Charger 4 Slots, USB Rechargeable Battery Charge, 4-Slot Universal Smart LED Display Battery Charger, for 3.7V Li-ion Rechargeable (Battery not included)

• ⚡【Intelligent Design】This 18650 battery charger with smart LED indicator independent display has four independent charging slots for charging different batteries at the same time and clearly shows the charging status of each battery.
• ⚡【Safety Performance】With reverse connection protection and overcharge protection. Charging is automatically stopped if the charger or battery temperature becomes too high during charging. Integrated high-performance protection circuitry automatically prevents overcharging, deep discharging and short-circuiting.

D Battery With Battery Charger LCD Display - 6 Pieces 8000 mAh D Rechargeable Batteries With Universal Battery Charger Fast For AA/AAA/C/D NIMH Batteries

• 【High Quality D Cell Batteries】Our high quality lr20 d battery have a super large capacity and long service life, making them the perfect replacement for standard D batteries in digital cameras, water heaters, LED flashlights, emergency lanterns, portable radios, cassette recorders, Solar lights, toys, electric harness frames, baby seats and much more.
• 【Low Self-Discharge Technology】Our unique low self-discharge technology ensures that our mono rechargeable batteries not only have a large capacity, but also maintain a high capacity state for a long time. Our type D batteries can retain 80% of their capacity even after three years of non-use.

Rechargeable Battery Charger, Lithium Coin Button Cells Battery Charger, USB C Li Ion Coin Button Cells Charger for LIR2032 LIR1632 LIR2025 LIR2016 LIR2032H (Shipped Without

• COMPATIBLE MODELS: The button cell charger can not only charge 2032 rechargeable batteries, it is compatible to support LIR2032, LIR1632, LIR2025, LIR2016, LIR2032H charging at the same time. It cannot charge disposable batteries such as 3V CR1632 batteries!
• RECHARGEABLE BATTERY: The 2032 battery is the same size as the 3V CR2032 lithium battery, and the high 3.6V voltage is suitable for low consumption devices within 3 volts to 3.6 volts. The coin cell charger has a capacity of 45mAh and can be recharged up to 500 times.

Dlyfull 8 Slot Battery Charger AA AAA Independent Slot with Type C Fast Charging for 1.2V Ni-MH Ni-CD AA AAA Rechargeable Battery Charger

• 💯 Individual Charging Slot: Rechargeable battery charger comes with an 8 slot design. Dlyfull charger can accommodate a mix of AA and AAA batteries. Efficient and time-saving.
• 💯 Type-C Fast Charging: Dlyfull advanced aa aaa battery charging technology, your batteries will charge faster than ever. Say goodbye to long waiting times.

8 Slot AA/AAA Battery Charger Support Short Circuit Protection LCD For Aaa/aa Battery Charging Rechargeable Portable Battery Charger Aaa Aa Battery Charger Lithium Battery Charger Battery

• PC+ABS environment-friendly material with over voltage protection, over protection, short circuit protection, over temperature protection, over current protection
• Fully conpatible with AA/AAA rechargeable betteries,with LCD display for clear charging progress

TECNOULAB 10pcs TP4056 Lithium Battery Charging Module 1A 5V Mini/Micro USB Interface

14 Slot Battery Charger AA AAA - Universal LED Battery Charger Intelligent Battery Charger For 1.2V AA AAA NiMH/NICD And 9V Li-Ion/NICD Rechargeable Batteries With Discharge Function

• 【Separate Slots】The home battery charger has separate charging channels and the LCD charger has a capacity of 450MA for charging 1-10 1.2V AA AAA NIMH batteries and 1-4 9V batteries, no need to charge in pairs.
• 【Discharge Function】Press the button to discharge the battery nimh. "DISCHG" will appear on the LCD display and the battery will automatically enter the discharge mode. Solar battery charger has built-in intelligent technology that will automatically stop charging when the battery is fully charged, prolonging the battery life and performance.

CLDP USB-C Intelligent Battery Charger for NiZn Rechargeable 4-Channel Charging Dock for AA & AAA Batteries

• Intelligent 4 Channel charger to charge AA & AAA NiZn batteries
• Automatic cut-off to prevent overcharging once batteries are fully charged

Daucin CAUTION Tape, Yellow Warning Tape Self-adhesive Barricade Safety Tapes with Bold Black Font Text, Maximum Readability for Halloween Decorations Workplace Danger Areas - 25 M x 4.8 CM

• 【High Marking and Visibility】Even on curved surfaces and corners, it can stretch and fit perfectly. Perfectly used in the construction areas, painting work areas, safety warning scenes and any potentially dangerous areas.
• 【Tear Resistance Design】The water resistant material will keep the tape in good condition even in wet and windy weather. And UV resistant design make it not fade even though exposed the sun for a long time.

Police Warning Strobe Shoulder Lights,Rechargable Safety LED Flashing Security Clip lamp with Flashlight for Outdoor Rescue,Traffic Guidance,Police patrols,Cycling,Night Run (Red/Blue)

• [Easy to use]:This sheriff warning safety strobe light clip can be fixed on vest,brake,belt,backpack. It has 2 working modes. Mode 1: Blue-red flashes (displayed alternately), and then red and blue lights flash simultaneously. Mode 2: White light,act as flashlight.In the blinking state, resetting the police will temporarily go to sleep, and then tap the prompt to wake it from sleep to blinking.Visibility in flash mode is 1,000 meters,ensuring your travel safety.
• [Various uses]：This flashing warning lights are suitable for safety warning,law enforcement,emergency personnel,voluntary firefighters.It is also an essential accessory for early morning and late night jogging,Cycling,hiking,camping,motorcycle, marathon,traffic safety,etc.The housing is made of durable ABS material,is transparent and highly visible,and the LED chip provides excellent bright colors

NEXTORCH Security Lights LED Rechargable Police Warning Lights with Detachable Clip Red Blue Strobe Flashing Clip Torch for Outdoor Rescue, Traffic Guidance, Police Patrols,Cycling,Night Run UT21

• 【 Warning Safety Light】The UT21 is a professional safety light with 3 light sources and a removable clip，which can be clipped to backpacks, shoulder straps and vest straps. Not only it can be used in tactical scenarios, e.g. for traffic guidance and police patrols，but also the Flashlight can also be used as a bike light, backpack light, pet collar light to meet your nighttime warning needs.
• 【23 High Intensity LEDs】The warning flashlight has 22 high power red and blue LEDs, ensuring 360° visibility, being your personal safety light. The shoulder warning light also comes with 1 white LEDs, which emits 11 lumens, enough for working and police patrol. The 23 high power LEDs make you to be seen even hundreds of meters away for night-lighting needs.

Car Warning Emergency Siren - 20 Tones Police Sirens with Wireless Remote Handheld Microphone Speaker, 200W 118-130DB 12V Dual 20A Auxiliary Switch for Police Firefighter Ambulance Vehicles

• 【Wireless Remote Handheld Microphone】 - The wireless remote control makes you can control the siren PA system even from inside or outside of the car. Frees you from the shackles of the wiring harness. The remote can be switched to the microphone via the side button, and could be easily charge via the USB port on the back of the controller, the wireless control range as far as 15 meters.
• 【20 TONES】- This Emergency Warning Horn siren PA system offers the essential function of 20 different siren tones. 20 Warning tones built inside to meet different needs, including:HIGH、BASS、6SECONDS、YELP、air horn、WAIL-1、WAIL-2、HILO, etc

SANON 8 LED Car Truck Dash Strobe Flash Red/Blue Light Emergency Police Warning 3 Mode Lamp 8LED Flash Lamp for 12V Vehicles

• Bright flashing modes for different occasions: red light flashes, blue light flashes or red light blue light flash at the same time
• Used great on commercial trucks, security vehicles, construction vehicles, emergency vehicles etc.

[WOOTTON INDUSTRIES LIMITED] 20cm x 13.3cm Protected By Police Linked Alarm System Sign Caution Warning Danger Hazard [Self Adhesive Sticker]

• 20cm x 13.3cm
• Self adhesive sticker complete with Wootton Industries Limited fitting instructions.

Yellow Caution Tape, Hazard Warning Tape Non Adhesive Police Tape Roll Crime Scene Black and Yellow Barricade Ribbon Tape, Safety Barrier Tape Halloween Caution Tape Party Construction Danger Tape-20M

• ✂ ♒ 【Hazard Tape Black and Yellow】: The striking bright yellow color of barrier tape makes a great contrast with the bold black text "CAUTION" which makes it very noticeable when entering a hazardous area. This caution warning tape is great for preventing accidents in areas of hazards, obstacles, or construction.
• ✂ ♒ 【Caution Tape Easy to Use】: This police tape sized with width 7.5CM and roll length 20M, which can be cut and installed easily, thus setting it up will only take a few minutes. Barricade tape non adhesive Unrolls quickly, can be tied or tacked to posts, trees etc, tear or cut to length. Yellow tape is perfect for placing anywhere. Warning tape is used in construction zones to notify people about the ongoing construction and that there are possible hazards within the demarcated area.

Faithfull FAITAPEBARRW Hazard Warning Barrier Tape 70mm x 500M Red/White

• A strong and durable non-adhesive PVC strip used for marking wiring areas
• The highly contrasting coloured stripes serve as a clear visual warning and can be used to separate areas

Guiffly Halloween Caution Tape, Self-adhesive Hazard Warning Tape, Yellow & Black Caution Tape for Danger Areas, Warning Tape Halloween Decorations Tape for Party Decorations (4.8cm*25m)

• ⚡【Halloween Caution Tape】Halloween Warning Tape printed with an eye-catching warning sign. With a width of 4.8 cm and a roll length of 25 m. The Halloween warning tape decoration is easy to use and can be easily cut to any desired length and shape.
• 🚧【Enhanced Visibility】Our caution tape provides high visibility and marking even on curved surfaces and corners, ensuring a perfect fit. It is especially useful in construction areas, painting work areas, safety warning scenes, and any potentially hazardous area that needs to be clearly marked. It serves as an eye-catching visual warning of potential hazards, while also injecting an air of terror into any environment.

Caution Tape, 4.8cm * 25m CAUTION Adhesive Halloween Caution Tape, Halloween Tape Decorations with Bold Black Font Text

• ★High Visibility：The combination of black CAUTION text and a bright yellow background contrasts sharply, making it easier to read and see when approaching, and the sense of warning is stronger.
• ★Self Adhesive Warning Tape：Halloween caution tape size is 4.8CM in width and 25M in length, it can be cut to any length and shape you need.

Flea Trap Sticky Sticker Mosquito Trap Sticky Paper Round Sticky Pads Flea Trap Installation Glue Discs Replacement Disc,Flea Trap Sticky Sticker(10PCS)

• Package: Package contains 10 packs of flea sticky pads. It is recommended to replace the flea pads about every 2 weeks, or when fully covered with flea or dust.
• Premium Material: Round sticky fly trap is made of high-quality paper, glue and plastic film, lightweight, smooth, sticky, easy to clean.

10Pcs Flea Trap Sticky Sticker,Flea Trap Sticky Discs Mosquito Trap Sticky Paper Round Sticky Pads,Flea Trap Refill for Pet House Carpet Living Room Bedroom Hallway Garden Home(White)

• 🔥 Package: Each pack comes with 10pcs flea trap sticky sticker , ideal for bi-weekly replacement or when dust and pests cover the surface.
• 🔥 Superior Craftsmanship: Flea trap sticky discs crafted with high-quality paper, glue, and plastic film, ensuring a smooth, lightweight, and ultra-sticky surface that's also simple to clean.

15 Pcs Flea Trap Sticky Sticker, Flea Killer Sticky Discs Replacements Round Pest Control Glue Sticky Pads, Disposable Fly Killer Paper Simple Installation Glue Discs for Pet House Living Room Hallway

• Comprehensive Flea Control: Harness the power of our sticky stickers pack! Serving as a potent home flea treatment, it works in conjunction with flea bombs and lamps, targeting fleas, mosquitos, and other common household pests ensuring a flea-free home.
• Superior Stickiness & Durability: Crafted with precision, our Mosquito Trap Sticky Papers boast high adhesive strength ensuring pests remain trapped. Couple with flea bombs for a home free from fleas, providing peace of mind for homeowners.

Alnicov 10 Pcs Flea Trap Stickers Round Sticky Fly Traps Dome Flea Trap Refill for Home Bedroom Pet House

• Catches more fly insectsprotects plants from flying insects.
• The discs can be stored for up to 12 months and are ready to use if required. Can be used on other brands of devices.

Flea Trap, Flea Trap Sticker Disposable Fly Killer Paper Round Simple Installation Glue Discs for Home 5PCS

• This kind of Flea Trap is a easy, effective way to trap fleas. Enough in the package to catch fleas
• Flea Trap Sticker has No chemicals mean the device is safe to use around children and pets

SANON Flea Trap Refill, 5Pcs Flea Killer Sticky Discs Replacements Pest Control Glue Sticker Pads for Pet House Carpet Living Room Bedroom Hallway (Round)

• [ Reliable Trap ]: This flea trap refill with strong glue, effectively catches fleas or bed bugs fast, is easy to detect or replace. It is a safe and effective solution for flea problems, without using poison sprays.
• [ Kids Safety ]: Our sticky flea killer disc doesn't contain any chemicals or strong odours, it's natural and is safe to use around children and pets.

Flea Trap Sticky Sticker Disposable Fly Killer Paper Round Simple Installation Glue Discs for Home 5PCS Fleas & Mites

• Flea Sticker can be stored for up to 12 months, ready to be used when needed. Can be applied to other brand device
• This kind of Flea Trap is a easy, effective way to trap fleas. Enough in the package to catch fleas

Flea Trap Sticker Disposable Fly Killer Paper Round Simple Installation Glue Discs for Home, Flea Trap,Flea Trap Sticker,Flea Killer, 5pcs

• Our Flea Trap is a kind of Sticker with super flea trap
• These highly undesirable and unhealthy pests will be trapped on the replaceable Flea Killer

5Pcs Disposable Flea Trap Refill, Dome Flea Killer Sticky Discs Replacements Pest Control Glue Sticker Pads Discs for Pet House Carpet Living Room Bedroom Hallway Home Office Garden

• 【Durable Flea Trap Sticky Discs】 This flea trap refill with strong glue, effectively catches fleas or bed bugs fast, is easy to detect or replace. It is a safe and effective solution for flea problems, without using poison sprays. Good tensile force and super viscosity. Once the pest is stuck, it can’t escape easily.
• 【Safe And Practical】 Our sticky flea killer disc doesn't contain any chemicals or strong odours.No chemicals mean the device is safe to use around children and pets. You can place it where pests frequently appear. Also suitable for narrow places. No environmental restrictions.

Fly-Bye 6x Flea Trap Replacements Discs/Pads - Flea Trap Sticky Discs - Flea Traps for Home - Non-toxic, Unlike Some Flea Spray for the Home or Flea Bombs for the Home

• FLY-BYE: Genuine Fly-Bye Product - The strong adhesive traps fleas and other insects. Perfect flea traps for the home.Flea Trap Replacements Discs/Pads for Fly-Bye flea traps or any flea trap that requires a 7 inch or 18 cm disc
• LONG LASTING: The easy, effective way to control and trap fleas - Easy to apply and remove. More timely than Flea spray for the home.