Tender For infrared anticollisiondevice having one emitter module & one reflector to avoid collision of 2 crane s with the following specification: 1.working principle - retro reflective infrared waves. 2.supply voltage: 110/230v ac. 3.sensitivity adjustment: 25-100%. 4.output contact rating: 5 amps. 5.max distance of sensing: 3-10 mtrs. s imilar to model no: acd-501 of speed -o- control make- electronic switchs [ warranty period: 12 mon ths after the date of delivery ]