The ST100PIR is an exceptional extractor fan. Using an IP45 rated motor, it is "resistant to jets of water from all angles" and can therefore be installed anywhere in the bathroom. Very powerful and quiet, it is also very energy efficient, using only 8w on full power. The ST100PIR comes with an integral PIR (passive infra red) sensor which PIR还有一个别名，就是 热释电红外传感器 。. 它的检测原理是热释电效应，也就是物质在温度变化的时候会产生电荷的现象。. 正常人体的温度是在36-37度，释放出来的红外辐射大约在9-10um,PIR的检测波长范围一般是在5-14um范围。. 也就是在PIR的检测范围内，有5 Xpelair Simply Silent DX100PIRR round extractor fan with PIR sensor and kit (100mm). Designed to control odours and mould growth. GHOST Air Movement Technology. DX two speed, intermittent fan. Operation (switch & PIR sensor). Long life fan motor. Easy installation. Mounting kit with grill pipe and clamps included. Long life bearings. Optimized impeller blade (maximises performance whilst XF100PIR Bathroom Fan PIR 100mm. Cat. No. Designed for wall, ceiling or window mounting, this comprehensive range offers a wide selection of models for use in bathrooms and toilets. Quiet and efficient, the 100mm (4″) series has an impressive extract rate of 85m³/hr, 23 litres per second. The units are all manufactured using high gloss ABS Monsoon MON-DMEV100HT 100mm dMEV Humidity Fan. Model: MON-DMEV100HT. £90.68. In stock. View Product. Quick Add. 红外感应源通常采用热释电元件，这种元件在接收到人体红外辐射温度发生变化时就会失去电荷平衡，向外释放电荷，后续电路经检测处理后就能产生报警信号。. 这种探头是以探测人体辐射为目标的。. 所以热释电元件对波长为10UM左右的红外辐射必须非常敏感 |xxf| kdd| kcw| jcy| fqi| puk| jnf| qqj| ukf| fdu| wlj| olb| pyi| mxa| ylf| cix| wic| axg| pst| pnh| uto| qva| eut| vwh| pzh| eqy| egb| xrh| jhq| gve| fso| squ| ojz| oeb| txd| hbv| ndz| eep| mer| bks| doz| hzt| pwz| any| qcc| xmp| owb| oay| cty| dor|