| 24v reversing buzzer ,level90+/-10,max current 0.6A,call number60-120c/min | 24v reversing buzzer, level85+/-15,current 0.6A,call number 60-120c/min |
| 24v reversing buzzer ,level85+/-15,max current 0.6A,call number 60-120c/min | 12v reversing buzzer ,max current 0.6A, call number 60-120c/min |