Doorbell Component Suite Electronic Production Door Bell DIY Kit NE555 Chip

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Seller: air_rocket ✉️ (11,170) 99.3%, Location: Guang Zhou, Guang Dong, CN, Ships to: WORLDWIDE, Item: 126379941165 Doorbell Component Suite Electronic Production Door Bell DIY Kit NE555 Chip.
Product Description Doorbell Component Suite Electronic Production Door Bell DIY Kit NE555 Chip

Description: 100%  brand  new  and  high  quality Ding  dong  doorbell  switch  s1  is  push  button  switch  on  the  door,  without  press  the  switch,  the  capacitance  cannot  be  connected  is  not  recharged,  and  capacitance  voltage  of  0  v,  the  reset  has  been  in  a  low  level  condition,  leading  to  the  speaker  doesn't  work.When  closed  switch  s1,  the  VCC  current  through  the  diode  for  capacitor  charging,  make  its  both  ends  of  the  voltage,  and  reset  voltage  also  began  to  rise  gradually.When  the  voltage  of  the  capacitance  increased  to  higher  levels,  namely  the  reset  input  port  is  the  high  level,  the  timer  starts,  composed  of  resistance,  capacitance  and  diode  oscillator  start  work,  output  frequency  for  f1.When  disconnecting  switch s1,  resistance  and  capacitance  circuit,  capacitor  began  to  discharge.At  the  same  time  composed  of  resistance,  capacitance  and  diode  oscillator  start  work,  output  frequency  for  `  2  f.Restore  low  level  is  reset  when  the  capacitor  discharge  end,  timer  stop  working. In  the  speaker  output  termination,  output  current  will  make  the  speaker  voice.Output  frequency  is  not  at  the  same  time,  the  sound  is  different.This  circuit  has  two  kinds  of  different  frequency,  so  the  speaker  will  be  issued  a  "ding"  "dong"  two  kinds  of  different  sounds. Specifications: Working  voltage:  4.0-7.0V PCB  size:  28mm  (L)  *25mm  (W) Kit  horn:  8  Ohm  0.25W Color:  Beige Net  Weight:  15g Package  Included:  1*  8  Ohm  0.25W  horn  2*  100MM  red  line 2*  100MM  black  line  1*  NE555  chip  1*  8P  IC  block  1*  100UF  25V  Capacitance 1*  10UF  25V  Capacitance 1*  6*6*5  keystroke]  3*  103  ceramic  capacitors  5*  47K  resistance  2*  1N4148

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1. We accept PayPal only.

2. All major credit cards are accepted through secure payment processor PayPal.

1. We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.

2. Items will be shipped within 2-5 business days when we received payment.(exclusive holidays or weekends)

3. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer responsibility.Please check with your country  customs office to determine what these additional costs will be prior to bidding/buying.

4. Delivery time depends on destination and other factors, normally it would sooner than the ETA if it can go smoothly through customs.

1. 30-day Free return

2. For any problems caused by our side, Pls contact us first.We will provide a best resolution for you.

3. Pls do not open a return request before contacting us!

4. Any other returns, parcel must in good condition and original package.

1.  If you are satisfied with the items and our service, please take a minute to leave us a positive feedback, we are glad to leave positive feedback to you automatically after payment cleared.

2. Please do not hesitate to contact us to get a better solution before you leave a neutral or negative feedback, even open a case, we will provide you the best service.

3. We’re always with you, sincerely thanks not to leave neutral/negative feedback or open a case before receiving our replies, thanks to consider our working time so maybe we couldn’t reply to you in a timely manner. 

Payment

1. We accept PayPal only.

2. All major credit cards are accepted through secure payment processor PayPal.

Shipping

1. We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.

2. Items will be shipped within 2-5 business days when we received payment.(exclusive holidays or weekends)

3. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer responsibility.Please check with your country  customs office to determine what these additional costs will be prior to bidding/buying.

4. Delivery time depends on destination and other factors, normally it would sooner than the ETA if it can go smoothly through customs.

Returns

1. 30-day Free return

2. For any problems caused by our side, Pls contact us first.We will provide a best resolution for you.

3. Pls do not open a return request before contacting us!

4. Any other returns, parcel must in good condition and original package.

Contact Us

1.  If you are satisfied with the items and our service, please take a minute to leave us a positive feedback, we are glad to leave positive feedback to you automatically after payment cleared.

2. Please do not hesitate to contact us to get a better solution before you leave a neutral or negative feedback, even open a case, we will provide you the best service.

3. We’re always with you, sincerely thanks not to leave neutral/negative feedback or open a case before receiving our replies, thanks to consider our working time so maybe we couldn’t reply to you in a timely manner. 

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  • Condition: New
  • Brand: Air_rocket
  • Color: As the Pictures Shown
  • Type: Electronic Production
  • UPC: 425124186131

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  •  Popularity - 0 watchers, 0.0 new watchers per day, 14 days for sale on eBay. 0 sold, 5 available.
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  •  Seller - 11,170+ items sold. 0.7% negative feedback. Great seller with very good positive feedback and over 50 ratings.

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