... charactor: Siren, manual, wail, yelp, hi-lo, horn, radio. 2. Handhold mike, with controller. 3. Monolithic integrate YSQ-2001. It conform ... tone antiaircraft, 6s wrecker, whistle-1, whistle-2, whistle-33. Handhold controller.4. With memory function.5. Monolithic integrated circuit in ... : 125-128dB7. Overall size: 198mm(L)x108mm(W)x48mm(H) Handhold Electronic Siren (CJB-200RD)