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Company: Senba Sensing Technology Co., Ltd.
Building 4, Huawan Industrial Park ,Bao'an ,Shenzhen , China
Shenzhen 518102
Phone: 075582594732
E-Mail: Send Inquiry
Date/Time:  9/27/19 1:06 GMT

4pins Digital Smart Pyroelectric Detector BS412


Senba is one of the most professional PIR sensor manufacturers for more than 15
years. We are the most advanced factory with complete categories. With strong R&D
center, there are digital type and analog type, dual elements and four elements
for you choose. The market cover domestic market, Korean, Amertica, Turkey and

BS412 is a newest smart digital motion detector with a small window size.
Pyroelectric motion sensor offers a complete motion detector solution, with all
electronic circuitry built into the detector housing. Only a power supply and
power-switching components need to be added to make the entire motion switch.

BS412 includes the time setting only.
Built-in filter, screen the interference by other frequency
Excellent power supply rejection, Insensitive to RF interference
Technical Data of pyroelectronic infrared sensor
1.Maximum Ratings
Characteristics Symbol My. Value Max. Value Unit Remarks
Supply Voltage VDD -0.3 3.6 V
Working Temperature TST -20 85 °C
Max.current for pin Into -100 100 mA
Storage Temperature TST -40 125 °C

2.Working Conditions (T=25°C,Vdd=3V,Except other requirements)
Characteristics Symbol Min. Type Max. Unit Remarks
Supply Voltage V DD 2.0 3 3.3 V IR = 0.5mA
Working Current I DD 9 9.5 11 μA
Sensitivity VSENS 90 μV
Output REL
Output Low Current In OL 10 mA VOL<1V
Output High Current 1 NC -10 mA VOL>(VDD-1V)
Lock time T OL 2.3 s
On-time T OH 2 3600 s
Input voltage 0 V DD V 0V to ¼ VDD
Input Bias Current -1 1 μA
Oscillator & Filter
Low pass filter cut-off frequency 7 Hz
High pass filter cut-off frequency 0.44 Hz
Oscillator frequency on Chip FCLK 64 kHz
Interior Block Diagram

home security systems

As its ability to sense warm, moving objects such as people walking into a room is
coupled with simplicity and cost effectiveness.


1.Can PIR sensor detect cars?

PIR-based Motion Detection: In this case motion is detected by means of a PIR
sensor, a passive infrared sensor. This sensor detects emitted infrared energy
from objects (humans and animals, but also cars) in the form of heat.

2.Do PIR sensors work in the dark?

Yes, motion sensors work in the dark. The way that a motion sensor detects
movement has nothing to do with how light or dark it is in the immediate area. ...
Since infrared energy is present and can be detected regardless of the amount of
light in the environment, a PIR motion sensor will work just fine in the dark.

Minimum Order: 1000 pieces

4pins Digital Smart Pyroelectric Detector BS412
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