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.
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.)
Max.current for pin
Detection spectral response
2.Working Conditions (T=25°C, Vdd=3V，Except other requirements)
Output Low Current
Output High Current
Low REL output locking time
High REL output delay time
Oscillator &Band Pass Filter(BPF)
Band Pass Filter(BPF) Low cut-off frequency
Band Pass Filter(BPF) High cut-off frequency
Oscillator frequency on Chip
Interior Block Diagram
Wireless Devices/Mobile Equipment
Wireless occupancy sensors (powered by PV cells or battery)
PC and smart phones
Commercial & residential lighting fixtures
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.