***** **********Best Quality Guranteed. *****SOS Fire Alarm Siren Bell - Single continuous alarm sound*****Easy operation-Just press your remote control when you need alarm (ON or OFF) *****Ideal for school, home, garage, warehouse, factory hotel security system*****Remote
Distance: 50-100m*****AC 110v for usa, ac 220v for EU and UK -We have pre-installed different plug for US, EU and UK market. For example, people in usa will get ac 110v model with US charger pin; people in UK will get ac 220v model with UK charger pin...