· 12V DC operating voltage

· 7 kinds of siren; Yelp1 (Fast), Yelp2 (very fast), Wail (slow), Siren, Air Horn, Hi-Lo, Di-Do

· Precise control mechanism is supported Microcontrollers

· The battery level is low or high according to the state of being different flash battery indicator light alerts the user to

· Microphone Siren using the opportunity to catch

· 100W (RMS) output power of the siren

-40 º C to +80 º C temperature range · Ability to operate

· 2.5m long microphone cable

· Opportunity to announce the microphone and an external signal

· Announcement and up to an external signal sound level adjustment

· Short-circuit and reverse connection protection

· Night-lit front panel for use

· Easy detachable, high-current-proof connectors

· Non-deformable polyurethane material Easy detachable microphone spiral cable

· Standard size auto radio-tape recorder in accordance with section

· Easy installation with Apparatus

· When the lamp control unit to control the light bars

· Keyless, Single Switch, Double Switch, Four Key