... max. 4.Trigger volume:70dB KA-SLH06 light control and sound control lamp holder specifications:1) Power source:220-240V ... is people's voice, hand clap, footstep or stomping sound etc. Off 15s-150s delaying time. Application places:Widely ... school, hall, office, basement, warehouses and houses etc.Energy efficient, economical, convenient, practical. light control and sound control lamp holder (KA-SLH06)