SIZE: 250X160X100MM HIGHLY RESISTANT ABS HOUSING, UV PREVENTION INSIDE METAL COVER FOR DOUBLE PROTECTION MAGNETIC DYNAMIC SOUNDERS WITH 120DB AT 1M, POSITIVE/NEGATIVE SIREN TRIGGER POSITIVE/NEGATIVE FLASH TRIGGER BATTERY BACKUP LEN CORLORS IN RED, BLUE, ORANGE, WHITE 2 WAY TAMPER SWITCH PROTECTION