Target: human body induction
Model: RDA226
Characteristics: High-precision AD signal process,Differential signal input mode, anti-interference ability

RDA226 Manual download
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Digital PIR sensor RDA-226, is an integrated design of sensitive element and signal processing chip, packaged sensitive element and IC chip into sensor shield. Sensitive element transfer the human movement signal to high-precision digital chip for data processing. Then the sensor gives digital signal for easy using.


  • Security product
  • Human body induction toys
  • Human body induction lamps, and switches
  • Industrial automation control
  • Smart home
  • IOT terminals
  • Intelligent appliance


  • High-precision AD signal process
  • Differential signal input mode, anti-interference ability
  • Sensitivity, delay time, and light adjustment function
  • Enable pin controls the sensor output
  • Low working voltage and power consumption
  • Digital TTL signal output 


Max Limit:
Parameter Symbol Min Max Unit
Voltage VDD -0.3 3.6 V
Pinlimit Into -100 100 mA
Storagetemperature TST -40 125
Working condition:
Parameter Symbol Min Typical Max Unit Note
Working condition
Voltage VDD 2.7 3 3.3 V  
Current ICC 12 15 20 uA  
Sensitivity VSENS 110   530 uV adjustable
Temperature WST -20   85  
High voltage VIH 80     %VDD  
Low voltage VIL     20 %VDD  
Current II -1   1 uA  
Lowcurrent IOL -10     mA  
Highcurrent IOH     10 mA  
Blocktime     2.3   S  
Delaytime ONTIME 2.3   4793 S adjustable
Inputadjustment (sensitivity/delay time)
Voltage input range   0   VDD V 0V-1/4VDD
Input bias current   -1   1 uA  
Oscillators and filters
Lowfilter cut-off frequency       7 Hz  
High filter cut-off frequency       0.44 Hz  
Chip oscillator frequency Fclk     64 KHz  

* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.

Technical Support:

Customized technical design and function, LOGO and package are available without extra charge (including molding fee) for mass volume.

The sensors don't have sleeping mode. It can be set in program if needed.

All Winsen products go through strict inspections and tests to make sure they are 100% qualified before shipping out.

The sensor has been fully tested (not calibrated) before leaving the factory. However, after transportation and storage, the environment conditions change, and the surface of the sensor absorbs moisture, mixed gas, pollution matters, etc. It is recommended that customers perform aging and calibration after sensors become stable according to the program and use occasions of the whole device.

15﹪-90﹪RH without condensation,greater or less than this range or long-term high temperature and high humidity will affect the life of the sensor.

Our sensors are certified with CE, 3C, ROHS, anti-explosion, fire prevention, and coal mining safety according to different applications. And we provide assistance for new certification.

Many factors can cause the sensor to fail such as broken wires in transportation, poisoning, falling off of the sensitive material, damage to the heating wire (device), etc. Please find specific cause in each category with Winsen’s aftersales.

Winsen provides professional consultation and service before and after sales. We will recommend the best fitting sensor for your demand. If you have any problem, don’t hesitate to email us to

Due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. But we will reply to your inquiry in 24 business hours.