ReviewsElectronic Buzzers

Miniature Current Switch,Current Sensing Switch,with Rails,Normally Open Amp Sensor Monitoring Relay AC 0-30A Detectable（M3050）

...netic conditions. Through structure design, isolation withstand voltage up to 2000V..
LED Indication: The action current is 0-30A AC, which can be adjusted by the potentiometer. The LED indicator light can easily and intuitively indicate the working status of the switch..
ABS material: High-power MOS tube non-contact electronic switch is used, and the shell is made of self-extinguishing material ABS, which is heat-resistant, acid-alkali-resistant, high impact strength and stable in performance..

...etic conditions. Through structure design, isolation withstand voltage up to 2000V..
LED Indication: The action current is 0-200A AC, which can be adjusted by the potentiometer. The LED indicator light can easily and intuitively indicate the working status of the switch..
ABS material: High-power MOS tube non-contact electronic switch is used, and the shell is made of self-extinguishing material ABS, which is heat-resistant, acid-alkali-resistant, high impact strength and stable in performance..

... with the PI tinkering. Good invention and great to have as tool for invention and programming.
【High-quality Components 100+】 Contains a GPIO breakout board and high-quality sensors modules like Temperature and Humidity Sensor,Joystick Module,Stepper Motor Driver,PCF8591 A/D Converter Module,etc.and a series of electronic components such as resistors,leds,buzzers and many more..
【The Ideal Gift for Advancers】 The box comes in with all the parts neatly arranged inside. Every item is well-sealed. It is a highly recommended gift for boys & girls's birthday, Christmas Day, Children's Day and other special days, summer camp, stem activities, back to school..
【Professional Support】 You could also get the latest tutorials on the wiki web. Our technical support team and customer service are always ready to help you..

USED WITH DOORS, WINDOWS, BELLS AND BUZZERS: This roller ball door contact from Morris Products is suitable for security and alarm systems as well as doors, windows, bells and buzzers to signal circuits and general low voltage switching applications..
LIGHT OR ALARM ACTIVATION: Easily open and close a low voltage circuit to activate a light or alarm when a door or window is opened with this roller ball door contact for low voltage is installed..
DURABLE CONSTRUCTION: Featuring a closed plastic housing, this roller ball door contact is resistant to dust and corrosion and works with time-activated switches..
VERSATILE UNIT: Choose from roller ball door contact models that feature open circuit on, open circuit off and make and break circuit types. These roller ball door contacts from Morris Products are available with 12, 24 and 48 volts, 1-2 AC Amps and 0.5, 1 and 2 DC Amps..
COLLECTION OF COMPREHENSIVE ELECTRICAL TOOLS: Morris Products is proud to feature a variety of electrical tools and applications that range from wire connectors and non-insulated ferrule to nylon cable ties and cable splicers..

【WIRELESS PAGING SYSTEM】：Includes 20pcs waterproof coaster pagers for customers and 1-999 channel keyboard for waiter. You could add up to 999 pagers at most. Then no worry about not enough pagers when your business increasing. Our buzzers have IP55 waterproof technology, it's perfect for restaurant.
【3 REMINDER MODES】: buzzer and vibration and flash.
customer can hear the beep sound even at noisy restaurants.
only vibration mode can keep the quiet environment of the clinic or hospital.
【REDUCES NOISE】: Food establishments and stores are noisy places. With these buzzers, your waitstaff won’t need to constantly call out a name or number to let guests know their table is ready or that they’re next to be served.
【 LONG RANGE】: Based on 433MHZ radio-frequency, transmit up to 100m/330ft indoors, The longest distance in the barrier-free environment is 120m/660 ft, it can effectively reduce the crowd gathering and provide better safety protection measures for your staffs and customers（When the signal of the restaurant pager is relatively poor, please tighten the antenna to the right ）.
【APPLICABLE SCENE】: this pager system is suitable for 4S store, fast food restaurants, coffee houses, pizza shop....

Quickly and easily transform classroom review sessions into an interactive quiz-off!.
Two ways to play! Students race to press their buzzers in “Quiz Show” mode or Wireless Eggspert chooses a student at random in “Scrambled Eggs” mode..
Engages students by making review sessions and quizzes fun and interactive!.
Includes Eggspert, 6 student buttons, teacher control button, and guide..
Unit requires 4 AA batteries or AC adapter (sold separately). Batteries not included..

Set of 12 buzzers each with a unique, real-world sound.
Promote active learning by incorporating student involvement in instructional activities.
Sounds mimic real-world objects that light up: siren, game-show buzzer, laser, and “charge”.

For Use With Chimes, Bells, Buzzers & Other Applications Within Specified Ratings.