Circuits for Kids ELSKY 335 Electronics Discovery Kit, Circuits Experiments Kit, Smart Electronics Block Kit,Educational Science Kits Toy,Great DIY Building Blocks Electric Circuits Kits for
★Learn While Doing Electronic Discovery Kits, Science Lab set Give your child an exciting, hands-on introduction to electronics with ELSKY Science Kits,Circuits kits. This innovative kit contains 31 parts real circuit components that combine together to create working electronic circuits and devices. Recommended for children 8 and older, this set offers many different projects that will give your child an entertaining, concrete education on how electronics work. ★Specification *Material: ABS Plastic and Brass button *Color: Multicolor *Box size: 14.05 x 10.63 x 1.85inch *Battery: 2 x AA batteries (not included) *Function: Flash, sound, power, recording *Assembled examples:lamp,electric fan,sound controlled music doorbell,and gate,or gate,voice control muslc doorbell,water control muslc doorbell,FM radio ★Package content: 1 x Electronic Discovery Kit; 1 x User manual ★Create Working Electronic Circuits *Every piece is numbered and color-coded to make identifying them easy. These components combine to create working circuit boards just like the ones found inside televisions, radios, and other electronic devices. ★Design Your Own Circuits and Upgrade Your Kit *Because the projects are arranged in order of complexity, kids can build on their skills as they progress through...
- Brand: ELSKY
- ASIN: B01N6CJ8IU
- UPC: 614878802286
Ring Wi-Fi Enabled Video Doorbell in Venetian Bronze, Works with
At Ring, our mission is simple: To reduce crime in neighborhoods. And by putting the power of home security in your hands, we’re making that mission a reality. Ring keeps your home secure and your family safe by protecting you against intruders, burglars, package thieves and any other unwanted guests. Ring makes sure you never miss a visitor. Because with Ring, you’re always home. Ring Video Doorbell lets you answer the door from anywhere. Whether you’re halfway across the world, or just too busy to walk to the door, Ring lets you see, hear and speak to visitors from the comfort of your smartphone, tablet or PC. Ring sends you instant alerts when anyone presses your doorbell button or triggers the built-in motion sensors. From the free Ring app, you can see your visitors in brilliant HD video, and hear and speak to them with crisp two-way audio. You also get a free trial to Cloud Video Recording, which lets you review, save and share videos captured by Ring. Ring Video Doorbell comes in four color options, so you can pick a finish that fits your home and your style. It's weatherproof construction and infrared night vision means you can monitor your home around the clock—day or night, rain or shine. Compatible with iOS and Android mobile devices, and Mac and Windows PCs.Li...
- Color: Venetian Bronze
- Brand: Ring
- ASIN: B00TZAO9D0
- UPC: 852239005048
Coolqiya Wireless Doorbell with 2 Remote Button and 3 Plugin Receiver, No Batteries Required for Receiver Over 50 Chimes,
Specifications: Size for Receiver: 3.1*3.1*1 inch;Transmitter:3.4*1.25*0.67 inch Working distance range: 900ft~1000ft (in an open air, no obstacles) Ring tone: 52 pieces selectable options Volume: 4-level adjustable volume (30 to 110 db) Receiver Power: AC 110V (US) Transmitter Power: 1 x 12V Alkaline Type A23 battery (included) Power consumption of receiver: Power consumption of transmitter: Working temperature: -30℃~70℃ Rating of waterproof: IP55 There is blue LED Flashing on transmitter and receiver to alert When you press the transmitter, and the receiver receiving the signal. Usage: Commercial/Residential/Assisted Living (It can be used as paging devices for elderly care and nursing residents.) How to set different ring tone for each transmitter Firstly, please plug receiver in to a regular wall socket, and please long press "volume control button" on receiver for 5-7 seconds untill you hear "ding" with blue light, that means entering the pairing mode and the following steps will help you make them paired:1. Firstly please seclect the music you want by pressing "music control button" on receiver.2. Then long press "volume button" on receiver about 5-7 second till you can hear receiver "ding" and there will be flash blue light. At this moment, please immediately press tra...
- Color: White
- Brand: Coolqiya
- ASIN: B01M14IWAV
- UPC: 713095283851
ILS - 3 pieces AC-DC 15V 2A 30W Switching Power Bare Board Stabilivolt Voltage Regulator Circuit Board Doorbell Power Module AC 100-240V To DC
- ASIN: B0769HVZXK
- UPC: 658515708296
Doorbell Sounds and Ringtones
- Brand: Ivyboat Entertainment
- ASIN: B00W0YFLTO
GREENCYCLE SF19R Wireless Entry Home Security Door Window Open Alarm, Burglar Alert Alarm, Tiny Magnetic Sensor Door Alarm for Home Garage Apartment Office Indoor Use
GREENCYCLE SF19R Tiny Magnetic Sensor Door Alarm Electrical Specification: Battery life: continuous standby over 1 year(according to control five times a day) Working environment temperature: -10C ~60C degrees Celsius Working environment humidity: < 80% Storage Temperature: -20C~70C degrees Celsius HOW TO USE Arming mode one(it will keep alarming when the magnet is apart from alarm host) In this state, once the magnet is apart from the alarm host, it will keep giving out alarm until the magnet and alarm get closer again or someone turns off the switch. Arming mode two (it will give out alarm sound for 30s once the magnet is apart from the alarm host) First, make sure the magnet and alarm host are in the safe distance(10mm). Turn on the switch, it will sounds ¡°De.De¡±, within 15 seconds after the beeps, turn down and up the switch, then it will sounds a longer beep ¡°De¡.¡±indicating it¡¯s in the second arming mode. In this mode, when the door or window is open it will give out alarm for 30s until someone turn off the switch. Closing door reminder mode: First, make sure the magnet and alarm host are in the safe distance(10mm). In this mode, when the door or window remains open, it will sounds ¡°Di Di Di¡± to remind the door or window is open, and the beeps will b...
- Brand: greencycle
- ASIN: B078PLQVFJ
DIY Kit Electronic Doorbell Package NE555 Precise Electronic Production Transformer Sound Circuit Processing
Its working voltage is DC3V-12V. It is usually powered by a 9V laminated battery. The higher the voltage, the louder the sound. Since the speaker is not in the box, the sound phase in the front and back of the plate counteracts the volume and the volume is smaller. You can load the carton to raise the volume.Working principle:The core C1 is the time base circuit integrated block NE 555. It forms the unsteady multivibrator. Press the button AN (mounted on the door), the oscillator oscillates, the oscillation frequency is about 700Hz, and the speaker makes a "ding" sound. At the same time, the power supply is charged by diode D1 to C1.When the button is released, C1 is discharged through the resistance R1, maintaining the oscillation. However, due to the disconnection of AN, the resistance R2 is threaded into the circuit, which changes the oscillation frequency, about 500Hz, and the speaker makes a "dong" sound.Until the voltage on C1 can t sustain the 555 oscillation. The length of the sound of "dong" can be changed by changing the number of C1.Note:The kit circuit is fairly simple. You will get a about 5*7cm universal board or process PCB board. Due to the cost limitation, the loudspeaker will be a little rusty for the inventory. (and different batches may not be the same, genera...
- Brand: kunwangaetc
- ASIN: B07GWQJQ7Y
SadoTech Model C Waterproof Wireless Doorbell Chime Operating over 500-feet Range with Over 50 Chimes, No Batteries Required for Plugin Receiver, IP68 Waterproof Button, Scratch Resistant Matte
Our Total Customer Satisfaction Guarantee - Thank you for making us the highest rated doorbells. If you are not 100% completely satisfied, simply contact us to request a refund or exchange! We are the Exclusive USA/Canada Sole Distributor of the Model C Series doorbell. For wholesale pricing please send inquiries directly. SadoTech doorbells are the perfect doorbells that are stylish, elegant and have a modern look for any home setting. Customer Notice: Please note that we supply two options for installing the doorbell button, with 1) double-sided tape or 2) screws and anchors. Using the double sided tape is a temporary solution. We recommend the screws and anchors. Follow the easy installation instructions. Specifications Wireless Range: 500-1000 ft / 300 m maximum in the OPEN AIR Tunes: 52 selectable options Volume: 4 level adjustable levels (25db to 110 db) Receiver Power: AC 110V 60Hz Transmitter Power: 1 x 12V Alkaline Type A23 battery Package Includes 1 x Push Button (Transmitter) 1 x Plugin Chime (Receiver) 2 x Screws 1 x Double-Sided Adhesive Tape 1 x 12V A23 Alkaline battery for transmitter 1 x User Manual
- Color: Waterproof Matte Black
- Brand: SadoTech
- ASIN: B018UYRTZQ
- UPC: 798154090724
555 ding-dong doorbell Kit (Teaching Kit | Training Kits | Electronic small production) Analog BUZZ
555 ding-dong doorbell Kit (Teaching Kit | Training Kits | Electronic small production) Analog BUZZ doorbell
- Brand: Circuit Modules
- ASIN: B01986QCTY
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