Features: 9 Switches control to play 9 pieces of music one to one.Support warning ligth The L50F voice broadcast trigger module with a wide voltage of 9-24VDC,This module is constructed from ensuring durability and reliability materials. Output power：up to 60W Can drive 4-8ohm speaker 20-60W Support mp3 WAV audiofile format；Play in aloop Perfect for DIY enthusiasts, hobbyists, and professionals alike Specifications: Item：Voice Broadcast Trigger Module WorkingVoltage: 9-24vdc WideVoltage Power Supply Size：Mixed Types：L50F/H50F/L50FK/H50FK Output power：up to 60W Can drive 4-8ohm speaker 20-60W Support mp3 WAV audiofile format；Play in aloop Package Includes: 1PC AudioBroadcast Prompt Module note: Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you