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DIY Wireless Coding Remote Control Doorbell Electronic Training Kit ↓ details & specifications
$2.74
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Classification
Product Type Doorbell Kits
Aesthetic
Color White
Material Plastic
Power & Batteries
Batteries Included No
Battery Form Factor AA
Required Battery Count 2
Package
Package Type Plain
Package Contents 1*Set of Doorbell, 1*Cable, 1*User Manual
Dimensions us | metric
Depth 20 mm
Height 120 mm
Width 80 mm
Product Weight 68 g
FastTech
SKU 9217900
DATE LISTED 10/15/2017
Details:
Wireless remote control doorbell kit is applicable to secondary school students in experimental teaching, it is a required course for professional electronic and communication technology, information technology, mechanical and electrical automation control. Skills training (examination) of good material (material). Is a good teaching materials for primary and secondary school students to carry out the second classroom activities.

First, the use of products:
 
  • 1.product features: can partition wall remote control, interesting.
  • 2. product use: door bell or call device.
  • 3. electronic gifts: assembled a good product, giving the teacher, students, parents, relatives and friends...... , demonstrate your learning outcomes, and enjoy the fun of success and use.
 
Two, working principle:
 
  • 1. emission circuit: according to AN, BG2, L2, R1 components of the boost circuit to convert 1.5V DC power into AC and DC, D1 rectifier, C5, C4 filter for the launch circuit to provide power. IC and output a string of numbers encoding signal by BG1 amplified by L1 external radiation. LED for signal launch indication.
  • 2. the receiver circuit to Q1 is the core of the receiving circuit the inductance L1 radio signal amplification, from the collector output pulse voltage, through C7 in U1 amplification, shaping, U2 decoded by foot and high input power level, U1 reverse by the foot output low level, triggering U3 music doorbell circuit, the horn to make beautiful music door bell. A SW1 can choose 3 different types of music. The whole machine is powered by 5 2 battery, which ensures the safety of the assembly. The circuit is designed with low power consumption, which ensures that the battery can be used for a long time.
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Available models and parts:
16-LED / 3*AA / red/yellow/green light
 
(1)
$5.77
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57-LED / warm white
$2.29
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lectro
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VERIFIED OWNER
  • JoinedFeb 2015
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  • Reviews 4
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Overall
› Quality
› Value
PROS
Inexpensive kit, should be easy to assemble.
CONS
No instructions, though if you look carefully at the product pictures that show folded instructions with the kit, you can see a schematic in two of the pictures that show a transistor added to the lit
It's not a wireless door bell; the kit supplies a fairly short wire pair to connect the door bell button to the small circuit board in the door bell box. The instruction paper shown in the product pi... (read full review)
Reviewed on 7/18/2020 Was this review helpful to you? Yes / No
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