... .Japanese technique, anti-disturbance computer chip integrated circuit2 Automatic Conveyor Needle DetectorApplicable:Clothing, baby products, knit goods, underwear, ... reach 100% when properly usedWhen detect the broken needle, or Fe, it will alarm by sound and ... & custom-build machineAlarm MethodAlarm by sound & light, machine stops, conveyer returns, then restarts againPower SupplyAc220V 50- ...