抗噪声能力强,环境光影响小,可并排使用,无相互干扰1、NPN、PNP or relay output 2、High performance ASIC with built-in amplifier 3、Operated side by side without mutual interference 4、Operation mode(Light on/Dark on) can be changed by switch 5、sensitivity adjustment 6、Self-recover short circuit protection, reversed voltage protection, over voltage protection