... transmitter and receiver 1.Input:100VAC-280VAC,47Hz-63Hz. 2.output: -48VDC/350MA 3.Max:200W 4.Approval: FCC,CE,ISO9001 transmitter and receiverFeatures and ... loose or contact undesirable, if damaged, please change in time.StorageWhen storing, must be kept in dry warehouse, not ... 55°C (low temperature storage recovery time is at least 4 hours)Relative humidit: 5% ~90%RH transmitter and receiver 12 ports