http://www.asianproducts.com/hotproduct/manufacturer_quad-photoelectric-detectors_.htm quad photoelectric detectors AsianProducts directory for quad photoelectric detectors - It includes sources from quad photoelectric detectors manufacturers and quad photoelectric detectors suppliers, and those qualified quad photoelectric detectors manufacturer are extensively from china, Taiwan, Hong Kong. Mon, 20 May 2013 20:03:02 +0800 Copyright 1986 - 2013 Media Federal Co. Ltd. All rights reserved. http://www.asianproducts.com/product/A13653050973638228_P13671134628058236/active-infrared-quad-beams.html Product Detail: pure digital photoelectric Special filter lens and circuit, anti-strong light jamming ? Lightning proof circuit design Model: SAL-30X/50X/75X/100X/150X Beams 3-10 Total Length 8...<a href="http://www.asianproducts.com/company/A13653050973638228/shen-zhen-karuoshi.html" target="_blank" title="SHEN ZHEN KARUOSHI Technology Co.,Ltd">SHEN ZHEN KARUOSHI Technology Co.,Ltd</a> Sun, 28 Apr 2013 09:45:30 +0800 P13671134628058236