Product Name: 107 Db Back up Alarm for Construction Machinery Model NO.: YS-B02 Receive Frequency: 1200 Alarm Volume (within 1m): ?100dB Transmission Mode: Cable Working Principle: Electromagnetic Application: Outdoor Certification: CE Working Mode: Active Signal Transmission: Wired Alarm Type: Industry Alarm Dimension: 127.0*70.0*73.4mm Trademark: YUEXIN Transport Package: Carton Specification: CE ROHS Origin: Cn HS Code: 8512301100 Product Description B00 SERIESB00 series is made for heavy duty applications in medium/high noise areas, Intelligent models measure the ambient noise level and adjust their output level, creat a volume that is safe without being annoying or contributing to noise poppution.Designed to meet all hash conditions and provide splendid durailitySealed in expoxy for protection against dust, mositure and vibrationVoltage polarity protectionEasy to install, and many optional connectors/wireRoHS compliant, CE certifiedOur companyFAQQ1: what is the MOQ?YUEDA: No MOQ required.Q2: what it the lead time?YUEDA: 1-3 weeks, for regular models, we usually prepare some in stock, so shipment could be made very soon.Q3: Can I have some free samples for evaluation first?YUEDA: Sure. We could offer some free samples.Q4: What payment methods do you accept?YUEDA: T/T, PayPal, western Union, Money gram.Q5: What payment terms do you accept?YUEDA: Generally, payment before shipment at the beginning.Q6: Can you make some revisions to it?YUEDA: Sure, we will, just let us know.Q7: Is it RoHS/REACH compliant?YUEDA: Yes, all our products are RoHS and REACH compliant.