Dual Element Pir Motion Sensor LHI778
The pyroelectric infrared sensor detects infrared radiation on the basis of the characteristics that the polarization of pyroelectric material changes with temperature. Dual compensated sensing elements are applied to suppress the interference resulting from temperature variation. As a result, the operating stability of the sensor is greatly improved Our products can be used in many applications.
The LHi 778 pyroelectric infrared-detector series are the standard dual element
design recommended for all variants of motion control. They include a dual element pyro-electric ceramic element with Fet in source follower connection.
LHi 778 detector is available in TO-5 housing with standard infrared filter. It provides high responsivity with excellent common mode performance (match) and low noise at steady state and temperature changes.
Parameter:
| IR Receiving Electrode | 2*1mm, 2elements |
| Window Size | 3*4mm |
| Spectral Response | 5-14um |
| Transmittance | > 75% |
| Output Signal[Vp-p] | > 3300mV |
| Detectivity (D*) | 1.4*108 cmHz1/2/W |
| Noise[Vp-p]: | 70mV |
| Output Balance: | 10% |
| Offset Voltage: | 0.3-1.2V |
| Supply Voltage | 3-15V |
Applications:
1. Security systems
2. Burglar alarms
3. Visitor acknowledgement
4. Light switch control
5. Intellectualized toy
Feature:
1. High sensitivity
2. Long detecting distance
3. Wide angle
4. Strong stability
5. Wide application fields
About Haiwang
Shenzhen Haiwang Sensor Co., Ltd is specialized in developing, manufacturing and export of photo resistor, thermisters, sensors, optical lenses and other sensitive components.
Our products include photoresistance, photosensitive sensor, thermistor, pyroelectric infrared sensor,
infrared induction IC, fresnel lens, LED lens and other related sensitive components.