Mini SMD Digital Pyroelectric Infrared Sensors S18-L242B-2

Overview

Senba Pyroelectric Infrared Sensors 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

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
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 Sensing Technology Co.,Ltd. is a professional china sensor manufacturer. We provide Infrared Thermopile Sensor, Digital PIR Sensor, sensor smd, mini infrared sensor, mini pir sensor module, mini pir motion sensor module, pir based motion detector, small pir sensor and so on. Want to know about pyroelectric infrared sensor working? Please contact us.