YJJ RDA224-F Digital PIR Pyroelectric IR Sensor Human Body Detector for Intrusion Alarm System

Product Description:

YJJ RDA224-F Digital PIR Pyroelectric IR Sensor Human Body Detector for Intrusion Alarm System

Features:

RDA224-F Digital Thermoluminescent Infrared PIR Sensor

Parameter Description
Principle: Thermoluminescence effect, an integrated human infrared sensing sensor combining **sensitive element + digital signal processing chip**, directly outputs digital TTL level, no need for external operational amplifier circuit, paired with Fresnel lens to detect human movement

Core Electrical Parameters

- Supply Voltage: **2.2V ~ 5.0 VDC**
- Static Power Consumption: Low power design
- Output Signal: **TTL digital level output (REL pin)**
- VOH ≥ 2.7V, VOL ≤ 0.3V (VDD = 3V, IOH = 10mA)
- Signal Filtering
- High-pass Cut-off Frequency FHPF: 0.4Hz
- Low-pass Cut-off Frequency FLPF: 7Hz
- Lockout Time: 2.0s (No response to new signals within 2 seconds after triggering, anti-false triggering)
- Output Delay ONTIME: 2~3600s, 16 non-linear adjustable levels (Human sensing retention time can be configured through pin)
- Detection Wavelength: Human infrared 8~14μm

Detection Performance (with Fresnel Lens)

- Detection Distance: 2~10m (Depends on lens selection)
- Sensing Angle: Determined by Fresnel lens
- Trigger Condition: Human movement, static human will not trigger
- Input Architecture: Differential signal acquisition, suppresses interference from slow changes in ambient temperature

Pin Definitions

1. VDD: Power positive terminal
2. GND: Power ground
3. REL: Human sensing trigger output pin (TTL)
4. ONTIME: Delay time configuration pin
5. SENS: Sensitivity adjustment pin
6. OEN: Enable control pin, can switch sensor operation

Product features

1. Integrated integration, built-in high-precision ADC, differential signal input, strong anti-interference ability
2. Digital TTL direct output, simplifies peripheral circuits, single-chip microcontroller can directly read
3. Both sensitivity and output delay time can be configured, suitable for different scenarios
4. Wide voltage supply, low power consumption, suitable for battery-powered devices
5. Built-in filtering, suppresses interference sources such as slow drift of light and temperature

Typical application

1. Human body sensing lights, sensing switches, smart home human presence detection
2. Security infrared alarm system, intrusion detection
3. Internet of Things (IoT) terminals, battery-powered portable devices
4. Human body sensing toys, automatic sensing control for household appliances
5. Industrial automation human body sensing detection

Specifications: