... largest manufacturer in ChinaModel No. : D203BThe pyroelectric infrared sensor detects infrared radiation from human, the polarization of pyroelectric material ... air-conditioner, fan)4. light switch control, lamp, LED tube5.intellectualized toy, etc.6.other human detect systemData ... market share. Senba industrial parkSenba Advanced Equipment LED lights used PIR D203B, wide detect range motion sensor