... 4.Trigger volume:70dB KA-SLH06 light control and sound control lamp holder specifications:1) Power source:220-240V ... ,directly ready for operation;2) Light control function:With light sensor,only work when ... and aisle of enterprises, hotels, hospital, school, hall, office, basement, warehouses and houses etc.Energy efficient, economical, convenient, practical. light control and sound control lamp holder ...