Mini SMD Digital Pyroelectric Infrared Sensors S18-L242B-2

Overview

Senba mini pir motion sensor   with high sensitivity, low noise and reliable performance. We have our own research and development department, with international technology and Hybrid IC technique expertise developed more than 15 years. The goods come standard with enhanced immunity to RFI (Radio Frequency Interference) and 2.4G high frequency interference. Senba PIR sensor suppport delay time, sensitivity adjustable, lighting adjustable.

Features of small pir motion sensor
High sensitivity and excellent S/N ratio

Enhanced immunity to RFI (Radio Frequency Interference)

Slight movement can be detectable

High immunity to external noise (vibration, etc.)

Technical Data of small movement sensor

1.Maximum Ratings
Characteristics
Symbol
Min. Value
Max. Value
Unit
Remarks
Working Temperature
TOT
-30
70
℃

Storage Temperature
TST
-40
80
℃

Max.current for pin
Into
-100
100
mA

Viewing angle

X=110°
Y=90°


Detection spectral response
λ
5
14
μm


2.Working Conditions (T=25°C, Vdd=3V，Except other requirements)
Characteristics
Symbol
Min.
Type
Max.
Unit
Remarks
Supply Voltage
VDD
2.2
3
3.7
V

Working Current
IDD
9
9.5
11
μA

Sensitivity
VSENS

90

μV
Non-adjustable
Output REL
Output Low Current
IOL
10


mA
VOL<1V
Output High Current
IOH


-10
mA
VOL>(VDD-1V)
Low REL output locking time
IOH

2.3

s
Non-adiustable
High REL output delay time
IOH
2.3

3600
s

Oscillator &Band Pass Filter(BPF)
Band Pass Filter(BPF)  Low cut-off frequency



7
Hz

Band Pass Filter(BPF)  High cut-off frequency



0.44
Hz

Oscillator frequency on Chip
FCLK


64
kHz




Interior Block Diagram






Applications

Wireless Devices/Mobile Equipment

Wireless occupancy sensors (powered by PV cells or battery)

PC and smart phones

Commercial & residential lighting fixtures

Video intercoms

Vending machines



FAQ

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.

Senba is the specialist PIR manufacturer 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 Europe.

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