Concentration Unit Decibel: dBA. 1 x Hole Sticker. Temperature Range: -10℃ -50℃. Humidity Range: 20%-85%. Frequency Range: 50Hz-8.5kHz. Frequency Response Range: 50Hz-8.5KHz. Temperature Range: -10-50℃.
eBay
7 Color Backlight 2" 52mm Water Level Gauge+Water Level Sensor 100-600mm 0-190 Ohm Water Tank Meter Indicator Auto Car Boat
Aliexpress UK
Relative humidity: 20% to 85%. Screen brightness can be adjusted by hand. Detection temperature: -10°C to 50°C. Large screen for easy reading. 1 USB Cable. 1 Set of Installation Tools. Item weight: 268g / 9.5ounce.
eBay
XKC Y20 Liquid Level Sensor Switch Detector Contact Type Photoelectric Water Level Sensor Float Switch Flowmeter V/NPN Output
Aliexpress UK
Concentration Unit Decibel. 1 decibel knife. It's more sensitive, accurate and stable. Not only can the screen brightness be adjusted, you can also adjust the speed of detection. LED Screen. Item size:271 181 41.9mm.
eBay
Digital 52mm Fuel Level Gauge+Fuel Level Sensor 100~500MM 0-190ohm Waterproof LCD Oil Tank Meter for Auto Car Truck 12V/24V
Aliexpress UK
Magnetic Digital Angle Gauge with Dual Laser & Dual Mode Precision. 1 × Magnetic Digital Angle Gauge. 🔹 Dual Laser Guide for Enhanced Accuracy.
eBay
7 Color Light 52mm Fuel Level Gauge+Fuel Float Level Sensor 240-33 OHM for Auto Car Boat Waterproof IP67 Oil Tank Meter 12V 24V
Aliexpress UK
Inspection: Press the power switch button on the electrolyzer to the ON position to start the inspection. At the end, first press the power switch to the OFF position, and finally take out the electrolyzer.
eBay
0-190 Ohm Water Level Sensor 52mm Water Level Gauge with 7 Color LED Water Tank Meter Indicator Petrol Boat Car 12V24V Custom
Aliexpress UK
It is lightweight, compact, easy to carry, and is not limited by location or location. Windproof Sponge Design: The microphone is designed with a windproof sponge, more accurate sound collection, filtering the impact of wind on the sound.
eBay
0-190 Ohm Water Level Sensor 52mm Water Level Gauge with 7 Color Backlight Water Tank Meter Indicator Gasoline Boat Car 12V 24V
Aliexpress UK
Accurate sound level meter & audio spectrum analyzer & clock: adopts dedicated OLED display screen with 256 × 64 high resolution, guarantee the accuracy of each frequency band. Also with high-precision clock display, using SD3078 built-in crystal oscillator which can ensure that the clock accuracy is ±3.8ppm, year error within 1.2 minutes, very cool and interesting. Wide frequency range display & dual signal inputs: support 32Hz-16KHz frequency sweep, 8 kinds of frequency bands for free choice, high-precision display even can do frequency point test. Support line and microphone inputs, compatible with your phone/PC/game player/speaker, easily to see the music level status in real time and every slight change of sound can be shown visually. .
eBay
Waterproof IP67 52mm Fuel Level Gauge+Oil Level Sensor 100-500mm 0-190OHM Red LED Oil Tank Meter with Alarm Car RV Camper 12V24V
Aliexpress UK
Features: Magnetic Base, Laser, Dual-Side Display, Digital Precision.
eBay
2pcs 32mm/1.26" Universal Level Bubble Bullseye Level Horizontal Precision Spirits Circular Measuring Meter Measuring Tools
Aliexpress UK