DIY Pyroelectric Infrared Sensor Anti-theft Circuit Electronic Technology Training Kit

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Quick Details
Place of Origin:
Guangdong, China
Brand Name:
Model Number:
Operating Temperature:
-30~85 celsius
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Infrared sensor
Supply Ability
Supply Ability:
10000 Piece/Pieces per Day
Packaging & Delivery
Packaging Details
Safety Poly Bag
Lead Time :
1 to 7 days

DIY Pyroelectric Infrared Sensor Anti-theft Circuit Electronic Technology Training Kit


Product Description


Suite for parts, buyers need their own welding assembly. Vocational school electronic professional teaching materials.

Can be used for vocational college electronic information, electrical and other professional students teaching practice, but

also can be used for electronic enthusiasts assembly.



Pyroelectric infrared sensor security circuit consists of pyroelectric infrared sensor PIR, integrated operational amplifier

LM358, voltage comparator LM393, 110 alarm circuit and boot delay circuit, etc.. The circuit can be used as home

security. When the family leaves the room, the switch K1 is closed, the circuit starts to work. As long as someone enters

the room after a period of time, it will sound alarm.


1). the circuit is energized, the pyroelectric infrared signal of infrared sensor PIR to detect the front radiation of human

     body, from the signal PIR 2 feet output weak, after amplification transistor VT1, through the C2 input to the op amp

     IC2A 3 foot high gain low noise amplifier, and then by IC2A the "1 foot" output signal.


2). IC2B in the circuit as a voltage comparator, its "5" pin voltage reference is provided by R10, VD1, IC2A when the "1"

     foot output signal to the IC2B "6" feet, "5" and "6 foot" input voltage is compared, if at this time the "6 foot" voltage

     ratio 5 feet high, 7 feet of IC2B from high level to low level. The C6 through the VD2 discharge, the IC3 2 feet into

      low level, if the voltage reference voltage of 2 feet "than" 3 "feet of a resistance R14, partial pressure of R15 with

      low IC3, the" 1 foot "into a high VT2 transistor conduction music chip IC4 the" 2 foot "voltage, output audio signal   

      after amplification transistor VT4, buzzer driver BELL issued 110 alarm sounds.


3). when people leave the detection area, IC2B's "7" feet to high, VD2 cut-off, C6 has a charging time (30 seconds),

     making the buzzer delay alarm for 30 seconds.


4). VT3, R20 and C7. The time delay circuit, about 2 minutes (should be greater than the alarm delay time), to prevent the

     alarm immediately when starting up, let people have time to leave the scene, but also can prevent misoperation in

     power after the call.





Packaging & Shipping

Packing Condition:
Goods packed in sealed bags, put in safety carton boxes, well packed with Bubble.

Shipping Ways:



Shipping Saving Methold:

You can buy different items, we combine the shipment for you, save your shipping cost.

Buy more, save more!

1. We will arrange shipemnt in 3 to 5 working days after the payment confirmed.

2. Shipment will by DHL/Fedex/UPS/TNT/EMS. When you place the order to us, please confirm the shipping methold.

3. After shipping, we will send the tracking number to you for tracking the shipment.

Our Services

1. We can provide different kinds of electronic components to meet your requirements.

2. One-to-one service with efficient support.

3. We provide OEM service.

4. Protection of your design and all your private information

5. Quality stability, can to provide certification of products, such as CE, FCC, ISO9001:2000

6. Convenient payment methods: Paypal, Credit Card, T/T transfer,and Western Union.

7. Speedy shipment: we could arrange the shipment within 5 business days.


Company Information

Shenzhen Eshinede Technology Co., Ltd. 


Eshinede is a wholesaler, based in the city of Shenzhen in Mainland China. Goods are shipped to worldwide by air freight and couriers such as DHL/Fedex/UPS/TNT/EMS.

Unlike most Chinese export companies, there is no minimum order restriction. You can buy products in any order quantity - even 1 piece samples - from a wide selection of the latest released products. So you can test products and find out about the details of importing from Eshinede before you're committed to any large orders;

You can pay by TT transfer, Western Union and credit card through Paypal,  which offers total buyer protection;

Dropshippers can send single items directly from Eshinede to their customers.

All the products you buy from Eshinede are covered by a 12 month guarantee, and are carefully inspected for quality before packing- which is one additional level of QA over and above what is done in the factory;

You're supported by friendly English speaking staff before and after placing an order, and you can get full product information and support even before purchasing;

Your goods are packed carefully, and the packages are correctly labelled and accompanied by all the paperwork that's needed for smooth clearance through your country's Customs.

Our Products Range



1. What are my payment options?

For samples and small acount, it is 100% in advance.

For mass production, it is 30% in advance and 70% balance.

Welcome West Union, TT. bank account and Paypal.


2. How long will it take to ship my order?


As long as there is stock available, Eshinede usually ships items within 3 to 5 working days for samples and within 10 to 15 days for customized order once receiving the confirmation of a new order. The order will not be confirmed until the payment reaches Eshinede’S bank account. If we aretemporarily out of stock, we will do our best to inform you of the estimated lead time.


3. What does your warranty cover?


Eshinede’s product is backed by a 1-year limited warranty against manufacturing defects (material or workmanship). Missing/lost or worn out parts are not covered under our warranty.


4. Who will pay the freight for repairing items?


Both parties will share half the freight: the buyer will take the freight of sending it back to Eshinede, while Eshinede will cover that of sending it back to the buyer. And Eshinede suggests to sending it back with the next mass production items.

Contact Us

We will reply you immediately during our working time, we may can not reply you immeditely 
if it's not our working time, but will response as fast as we can.

Company Website: 


You are always welcome! we are looking forward to establish a long term of good business 
relationship with you.