Reviews Magnetic Buzzer

VIFLY Finder V2 FPV Racing Drone Buzzer with Battery Lost Drone Alarm 110dB Tracker Working as Normal Buzzer or Standalone Beeper (1pc Pack)

With the built-in battery, it can work as a standard buzzer that controlled by transmitter or standalone buzzer that beeps loudly after the main battery has been ejected..
Super loudly that the volume can reach up to 110 dB..
The LED can flash automatically when the built-in light sensor detects the light darkness..
Two ways to disarm the buzzer, via the switcher on the buzzer or plug-in-out the quad battery..
Be compatible with both FPV quadcopter and RC Airplane..

Buzzer alarm button with light and sound tips. Increase the fun of the game, easy to use..
Actively encourage contestants to join in the competition with this buzzer. Response buzzers let competitors easily buzz when they have an answer..
Size: app.11x9.7x12.2 cm/4.33x3.82x4.8 in (L x W x H)..
Excellent for a funny prank, office desk gadget, gag gifts game buzzer, and can be Party Contest Prop Toy for Family, School, Friends Party..
Package includes: 4 x Game Answer Buzzer. Powered by 2 x AA batteries each (Not included)..

-iFlight fpv finder buzzer built in battery,it can automatically alarm, sound over 100db, which make it easy to find your drone..
-With dual LED, much brighter,easier to find your drone in the darkness..
-Mini upgrade version, lightweight and with smaller size of 18*17*15mm suit for 3-5inch fpv drone.
-The drone buzzer is compatible with traditional active buzzer, and all BF/CF flight controls.
-How to disarm the buzzer : disconnect main battery, hold disarm button on YR50B_S for 1-5 seconds then release..

Quality Component: Professional design, designed with a compass for easier and quicker tuning. Powered by the receiver, nice tool for campers..
Easy To Use: With an electronic buzzer, easy operation, LCD with backlight to show the satellite signal..
Accurate Measurement: This professional digital satellite detector is much more accurate than any other measuring equipment of its kind..
Useful Tool: Connect your LNB and receiver to the satellite finder to track the clearest setting for the satellite you wish to tune to..
Signal Alarm Buzzer: Built in 0Hz, 22KHz, 13V, 18V signal alarm buzzer, buzzer and damping control..

Retekess T113 restaurant buzzer system used for remind customer to get their food and no longer to looking for customers.
Each restaurant buzzer has built-in rechargeable lithium battery and the restaurant waiting buzzers can work about 12 hours.
Working distance is about 500m or 1640ft at open area.
Each mode is accompanied by the LED flashing.
The restaurant pager system can call up to 98 restaurant buzzers.

... EASY READABLE VA DISPLAY & SWITCHABLE UNITS – Clear and bright VA display allows you to use this device in the dark without light. Display modes can be converted from degrees (') to percent (%), to (mm/m), to pitch (IN/FT)..
STRONG MAGNETIC V GROOVE BASE & HOLD FUNCTION - The V Groove base with strong magnets enables strong attachment over a curve or cylindrical magnetic surfaces such as metal pipeline or shafts. Hold function helps save the current angle on the display..
SMART AUDIBLE BUZZER - This inclinometer has beeper sounds feature at horizontal position (0°) or vertical position (90°) which makes you more convenient and easier when it is in use. You can also listen it where you are unable to see the display..
WIDE APPLICATIONS – Great tool for automotive, wood & mechanical industries, machinery, medical fields and etc..

DUAL FUNCTIONS - tilt/angle gauge to set and also check relative angles between two surfaces using Alternate Zero function.
EASY USER RE-CALIBRATION back to factory setting with no special fixture required.
RESOLUTION: ±0.1° (0° & 90°), ±0.2° for 1° to 89°, switchable display between degrees (°) or slope (%).
STRONG MAGNETIC BASE: securely attach to fences, saw blade & base, and other metallic surfaces.
improve accuracy with precise displays in degrees, In/Ft, mm/M, % slope.
Auto invert display when gauge is upside down . BUZZER SOUNDS at 0 degree and any set angle.
HOLD BUTTON to allow user freezing display for ease of reading. Measurement Range 0° ~ +/- 90° x 4 (360°).

Working temperature: -20 to +80 degrees Celsius..
overall size: 42x35mm / 1.65x1.38inch (DxH).
minimum sound pressure level: 80db at DC24V / 60CM.
working temperature: -20 to +80 degrees Celsius..
Continuous buzzer is very suitable for mechanical equipment, ovens, electrical cabinets, industrial applications, etc..